Get a CM Storm TK, its got backlighting, cherry blue, and not tenkeyless it includes both. The 10 key pad is a bit funky but can be used. It has a metal pad underneath to protect quality. Best bang for the buck.
Amazon link:
http://www.amazon.com/CM-Storm-QuickFire-TK-Mechanical/dp/B00A378L4C
right now is a bit expensive.
If you want the lower quality, get ducky basic mech keyboards, they are quite good but not as good as the CM Storm TK.
Amazon link:
http://www.amazon.com/Ducky-Zero-Keyboard-Black-Cherry/dp/B00C1NS3NA/ref=sr_1_1?ie=UTF8&qid=1377685391&sr=8-1&keywords=Ducky+Zero+DK2108+Mechanical+Keyboard
about the same price, but mech keyboards are expensive. you gotta shell out.
If you want the absolute worst but cheapest, get razer blackwidow. It's okay, but with many quality issues.
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