Well that was certainly one sided, now here is the other side:
Nvidia 9800GT in the ~$130 range.
Nvidia 9800GTX in the ~160 range.
Two of either of these cards in SLI should just about handle anything you throw at 'em.
Or...you could opt for a single GTX 260 or GTX 280.
I prefer a single card solution, but that's just my preference. My single 8800GTS tears up everything I throw at it...STILL. That may change, however, as more games become optimized for SLI and crossfire.