@ravi:
Sorry, but I have to _strongly_ disagree.
Most of the pros you list are just basic keyboard functions, and the sidewinder is a poor pick. It's horribly overpriced for a non-mechanical keyboard.
Intellitype (now microsoft keyboard and mouse center) is a hideously clunky program that is easily one-upped by the free, open autohotkey.
The backlighting is cool looking, but shouldn't matter - the game is on the screen, not the desk.
All told, it's a proprietary, membrane keyboard selling far above the $25 that membrane keyboards should run at the top end, and doesn't do any one thing particularly well or have any outstanding feature.