I wrote an article here few moths back where I waxed prosaic about mechanical computer keyboards. I got an e-mail from one of the companies I bought a keyboard from, Corsair. They've got the keyboard I have, the K70, and it's more functional brother, the K90, on sale for $78 (down from $120 and $130, respectively) and the K95 for $91 (down from $140). They even have the discontinued K60 on sale for $39. Hey, I'd buy that K90 and sell my K70 if I had the cash.
All these have Cherry MX Red switches and aluminum 60/40 cases (the top part of the case is aluminum -- 40% -- and the rest is hard plastic -- 60%). Shipping is $5ish to the US.
Differences:
K95 has white backlit keys (which you can turn off and change the brightness on each key) and programmable macro keys
K90 has blue backlit keys (which you can turn off) and programmable macro keys
K70 has red backlit (which you can turn off) keys
K60 has no backlight
All these have Cherry MX Red switches and aluminum 60/40 cases (the top part of the case is aluminum -- 40% -- and the rest is hard plastic -- 60%). Shipping is $5ish to the US.
Differences:
K95 has white backlit keys (which you can turn off and change the brightness on each key) and programmable macro keys
K90 has blue backlit keys (which you can turn off) and programmable macro keys
K70 has red backlit (which you can turn off) keys
K60 has no backlight