Hey I hope I can catch you before you buy. 200ish dollars is PERFECT for the Nvidia GTX 660. It costs 199.99 on average. It performs GREAT and is the BEST graphics card in that range. EVGA to me is the best name brand of 660 there is. If you wanna go a little cheaper you can get the AMD 7850 for about 179.99. And if you wanted to get one a little more expensive but not at all better than the 660 you could get a 7870 for 220.00.
Get the Nvidia EVGA GTX 660! Not the Ti version just the regular 660. Best option there is.
And if your looking for a real bargain. Right now you can get a GTX 650 Ti for only 124.99. It's still a great performance card, it'll play most games on high settings(although not at the level of the 660) and it's at an awesome price. I found it at pcpartpicker.com for only 124.99 when there normally 149.99
Personally I'd go with he GTX 660 though. You never wanna skimp on the graphics card.