Alright, so I've decided that I'm in the market for a new video card...the question here is, which one? I'm stuck in the middle between the ATI Radeon X1900XTX (Crossfire ready) card, which is a 512MB card, and the new nVidia GeForce 7950 GX2, with double the onboard memory of the Radeon - 1GB total. The increase in video memory seems pretty nice, but it's also over a hundred bucks more expensive. Anyone here care to help me make my choice? I'd like to pull out all the stops here and get something that'll last me a good long time, but I don't want to buy the second-place card either.