Turntable Cartridge Needle

need a needle or cartridge for a technics sl-1700mk2 turntable, any Ideas?
Search Yahoo, there is a bunch of online retailers. here is the first one that came up

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Stanton 680.V3 DJ Turntable Cartridge
$199
A classic club cartridge with superior sound quality. The legendary 680.V3 cartridge is regarded as one of the best cartridges on the planet for mixing, club use, and scratching. The wide-band frequency response will give you high energy record playback and that extra punch you need to quake the dance floor whether playing dance or hip-hop. The 680.V3's suspension is designed to be very stable for those less than perfect club setups. The suspension is so robust that the 680.V3 functions just as good as a scratch needle as it does as a club needle. The MP4 package includes 2 matched cartridges, mounted on tone-arm like devices, inside a small and practical road-worthy clear flight-case. Stanton 630.V3 DJ Turntable Cartridge Features Best cartridge for scratching Extremely good low end response for club environments Very forgiving suspension design New industrial design Perfect for: Hip hop/Scratch DJs Club DJs
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Ortofon OM Pro Single Turntable Cartridge
$51.99
The Ortofon Pro OM Turntable Cartridge gives you a nice balance of fidelity and tracking ability, amd works well with all styles of music. Perfect for scratching and back-cueing, the Ortofon OM Pro cartridge's spherical stylus and solid cantilever make it a great all-purpose turntable needle. Sonically, the Ortofon OM Pro tonearm cartridge gives you a quality, flat, transparent sound across the spectrum and has good handling ability, making it the kind of affordable turntable cartridge that benefits the amateur DJ honing his skills.
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Ortofon Om Pro Single Turntable Cartridge
$51.99
The Ortofon Pro OM Turntable Cartridge gives you a nice balance of fidelity and tracking ability, amd works well with all styles of music. Perfect for scratching and back-cueing, the Ortofon OM Pro cartridge's spherical stylus and solid cantilever make it a great all-purpose turntable needle. Sonically, the Ortofon OM Pro tonearm cartridge gives you a quality, flat, transparent sound across the spectrum and has good handling ability, making it the kind of affordable turntable cartridge that benefits the amateur DJ honing his skills.
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Ortofon OM Elektro Single Turntable Cartridge
$56.99
The Ortofon Elektro OM Turntable Cartridge isn't just another pretty face, despite its sleek white styling. With a reinforced rubber suspension, the Elektro OM is the perfect hybrid needle for the vinyl artist who both mixes and scratches. Enhanced tracking ability and excellent sound quality combine to form a unique balance of form and functionality. With bold, round sound, this Ortofon cartridge brings your music to life, whether you're in a club or the studio. The Ortofon OM Elektro Cartridge mounts to a standard turntable headshell.
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Ortofon Om Elektro Single Turntable Cartridge
$59.99
The Ortofon Elektro OM Turntable Cartridge isn't just another pretty face, despite its sleek white styling. With a reinforced rubber suspension, the Elektro OM is the perfect hybrid needle for the vinyl artist who both mixes and scratches. Enhanced tracking ability and excellent sound quality combine to form a unique balance of form and functionality. With bold, round sound, this Ortofon cartridge brings your music to life, whether you're in a club or the studio. The Ortofon OM Elektro Cartridge mounts to a standard turntable headshell.Sleek designReinforced rubber suspensionEnhanced tracking abilityMounts to a standard turntable headshell
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Shure SC35C DJ Turntable Cartridge
$34.95
This Highly Acclaimed Favorite is an Ideal Choice for All-Purpose DJ Use. All Shure DJ Cartridges feature high skip resistance, low record wear, and accurate sound reproduction. Shure cartridges use low mass, high output moving magnet construction invented by Shure. Its high tracking ability at lower tracking forces is gentle on your records. The Most Demanding DJs in the World Depend on Shure Needles!! Shure SC35C DJ Turntable Cartridge Features Incredibly High Skip Resistance High Output Design Low Wear on Vinyl Records Crystal clarity throughout the frequency range The SC35C is our standard DJ needle for all applications. With a tracking force range of 4 to 5 grams, the SC35C provides for significant skip resistance. Sharing Shure's versatile Type I cantilever design with the M35S, the SC35C offers high-definition sound reproduction at all audible frequencies. The cartridge comes with user guide, mounting hardware, stylus guard, and one-year warranty. Features include a wide-diameter, high strength stylus assemblies for dependable back cuinng, Spherical diamond tips that ride gently over a large footprint in the record groove, cutaway grips for high visibility of the irradiant orange stylus tip, standard 1/2 inch mounts compatible with all leading DJ turntables and Phillips head mounting hardware.
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Shure M44-7 Competition Turntable Cartridge
$65.95
Revived exactly the same as the original, this legendary battle needle offers ultra-high skip resistance and ultra-high output. The needle of choice for many champion DJ's worldwide, including The Invisibl Skratch Piklz and the X-ecutioners.
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Shure M44-7 DJ Turntable Cartridge
$65.95
The Shure M44-7 Phono Cartridge, recently revived exactly the same as the original, is a legendary battle needle offering ultra-high skip resistance and ultra-high output. The M44-7 is the needle of choice for many champion DJ's worldwide, including The former Invisibl Skratch Piklz, X-ecutioners, and The World Famous Beat Junkies. Engineered for scratch DJ's and turntablists, the M44-7 is designed not to skip under even the most demanding circumstances. For Battling Skip Resistance: Ultra-High Sound Accuracy: Good Sound Level (Output): Ultra-High Engineered for scratch DJ's and turntablists, the M44-7 is designed not to skip under even the most demanding circumstances.. Combining Shure's unique wide-diameter Type S cantilever with a tracking force of 1.5 to 3.0 grams, the M44-7's rugged construction is highly durable, but will not unduly wear your vinyl. With a 9.5 mV output, the highest on the market, the M44-7 produces very powerful, resonant sound. The newly revived M44 series were used to capture all of the titles contested at the International Turntablist Federation (ITF) World competition held in Amsterdam on November 17, 1998. THE MOST DEMANDING DJ'S IN THE WORLD DEPEND ON SHURE NEEDLES
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Shure Whitelabel DJ Turntable Cartridge
$79.95
The Shure Whitelabel is designed for party and club DJs spinning everything from house and techno to trance, dance, and jungle. With a sleek and ergonomic design, the cartridge additionally delivers higher trackability, lower tone-arm resonance, and better skip resistance. It also includes an adjustable stylus overhang, reliable electrical contact, and improved stylus visibility. Whitelabel’s sonic characteristics include solid drop bass, flat mids, and accented highs, all tailored for the club environment. Shure phono cartridges are micro-manufactured, electro-mechanical devices that tell an entire audio system what's happening along the half-mile groove that's cut into the typical analog disc. The quality of the information provided by the cartridge determines how faithfully any audio system will reproduce the recorded sound. Skip Resistance: high Output: high Record Wear: very low Sound Emphasis: solid drop bass with detailed mids and highs Features The Design: Industrial, ergonomic, and plays to the cartridge's technological benefits of headshell mounted cartridges. Forward-Mass Design: Center of gravity is displaced closer to the cantilever for optimal performance. Forward-mass produces higher trackability, lower tone-arm resonance, better skip resistance and requires lower tracking forces. Adjustable overhang (50mm - 54mm): Unique to Shure products, adjustable overhang retains the forward and backward adjustment of a standard-mount headshell, providing maximum flexible adjustment between S-arm and straight-arm turntables. Electrical Contact: Engineered for optimized compatibility with most professional turntables, a rubber tension gasket and rounded gold plated pins limit possible damage caused by over-tightening cartridge to the tone-arm. Stylus Visibility: DJs can see exactly where they drop the needle.
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What is the normal life span of a DJ Turntable needle and cartridge? ?
I am looking to buy some turntables but I want to see if it is too expensive to keep buying needles. And also does life of needles differ when it comes to a brand name?
Better brand equals better quality equals longer lifespan.