Upgrading from Gts 450, any takers!!!

Well, that question is a tricky one.
-How much are you willing to spend?
-What's your screen resolution?
-at what settings do you want to play?

Once we get that cleared up, might make a choice clear. I can tell you right now that upgrading to anything less than a 6950 probably isn't worth it.

screen res 1920 x 1080
medium to high
300 hundred dollar budget for the video card and if needed more for other components on the list. I was told that my psu will be fine for now for single card usage.