560Ti gets my vote. Less power required, cheaper, and similar performance to the 6950. Depending on the game it's either a few FPS behind or a few FPS ahead. DX11 support, CUDA and PhysX is nice. I really want CUDA for Premiere; as it is with my 4890 it's painfully slow to scrub due to lack of CUDA.
The Zotac 560Ti at NCIX is a heck of a steal at 215$ right now. I'm wanting the MSI Twin Frozr one though because I want a quieter PC.
http://ncix.com/products/index.php?s...c&promoid=1339