Buy the 6Gv2 if you want a keyboard that'll last you pretty much forever.
It's not per definition a gaming keyboard - it doesn't have fancy lights, it doesn't have macro keys, and it doesn't show you the time or your CPU
usage, but, damn, it's one of the best keyboards I've used in a while. I don't think I'll be changing keyboard the next 5-10 years.
EDIT: The BlackWidow or any other mechanical keyboard would be recommended too.
if you can do 10-finger writing - i can deeply recommend the kinesis keyboard ergonomic
it is sturdy and enables you to easily increase your letters/minute ratio. - to use it for gaming, it doesn t really offer too many extra functions and the keys are not arranged perfeclty ( or rather, you have to get used to it ) - mostly cause they are not meant to be used in the default "WASD" pattern ( so you need games that allow custom key bindings ) [not in that pattern means that the keys are not arranged diagonally like a normal keyboard - but fully vertically]
another problem is that it does of course cost you more ( expect ~ 150 '¬ ) - but its really durable and lasts for years easily ( unless you spill coffee or other crap into it )
[color=#FFFFFF]Ok this might sound retarded but as far as gaming is concerned I just adore my laptop keyboard. It's PC style (with the num pad and standart arrow keys) and the buttons are separate but it's somewhat more compact so I can press almost any key with my thumb