I went for the predicatbale choice in the end mate. G19. Matches my G9 mouse
It's no swarve looker but it has a great feel to it, and the backlighting is ace. I've not yet really got into the LCD display yet, but it automatically displays my stats in-game with Crysis so thats cool.
I have also remapped melee to a side button on the G9, which is much more intuative. Melee is a massive part of Crysis 2, especially with the aliens. I've never really been afan of it, but in this game it's effective, fun, and essential for conserving ammo.