I second the motion for the G810, had mine about a month now and i'm really happy.
It works driverless too:
Press and hold the LED On\Off button, and then press one of the following number, NOT from the keypad:
1: Color Wave (left to right)
2: Color Wave (right to left)
3: Color Wave (center out)
4: Breathing
5: Key impacts
6: Color Cycle
7: N/A
8: N/A
9: N/A
0: Solid Color (press again and again to choose the color you want)
-: Slower Effect, +: Faster Effect.