My vote is for the Diamond V770. Frame Rates aren't everything.
Clarity is everything.
Framerates are nice, but quality is better. And even the frame rates aren't all that bad. Without the TurboGL drivers, I can get around 40fps in Q3A at 1280x1024 with the quality maxed out and 10 bots running around in full view . . . That's enough for me any day. And the image quality beats anything out there.