I have the wireless Logitech EX-111 combo. Cheapest wireless set I could find. I got it for around Rs 1,800/-. Works fine for me. No key sticking problems. Keys are quite shallow though v/s deep keys on any other keyboard but it helps in registering a keypress faster.
I've played F.E.A.R, Doom3, and am now doing Flatout2 and NFS Underground(don't think you can finish these games anyway). Ok for these games. Mouse has a little lag sometimes do to the wireless aspect but have not had problems gaming with it. Keyboard is very good but arrow keys are little too close to the right ctrl key which is irritating.
Well it's no gaming keyboard but just wanted to let people know that you can consider it for a little gaming on the side if it isn't your primary requirement.