I am going to be buying a new system in a few days and have everything figured out (I think) except for the video card. I am trying to choose between a Radeon 6950 $230, a Radeon 7950 $290, and a nvidia 660 ti $265. My main concern is playing WoW and I would like to choose a cards which fits well with the system I am building. I am also open to new suggestions regarding similar cards if they are able to be bought for under $350. Current build follows. This build while close is also not quite final so suggestions in general are also welcome.
CPU-Intel i5 3570k
CPU Cooler- Noctua NH-D14
MB-Asus p8277-v lga1155
Ram-Kingston 4x4gb Quad channel 1600mhz
Case-Cooler Master Elite
Primary Hard Drive-Crucial 256gb SSD
Secondary Hard Drive-Western Digital 1tb 7200 rpm
Power Supply-Corsair Enthusiast 750w
Monitor-Asus 23" 2ms 1080p LCD
Optical Drive-Asus 24x Sata DVD-RW