Hello all, that time for a video card upgrade has come again, and I look to you guys for advice. I'm considering the nvidia 7950 GX2, the ati X1900 XT or XTX. There's quite the price difference between these three cards, with the XT at about $400, the XTX at about $500 and the GX2 at about $600. Right now I'm leaning towards the GX2 simply because it is the fastest single card to date, and I don't wish to run an SLI setup. Would it be wise to spring for the GX2 (or one of the other cards I mentioned), or wait for directx 10 cards to come out later this year?