Go to pricewatch and get a Inno3d Geforce 2 Ti 32MB for $89 shipped. Should overclock nicely to 275/450-460 and will be much faster then the other two cards you mentioned. Although the Inno3d brand has excellent image quality, there is another thread on how to disable the low pass filters and gain even better quality. You can also resistor mod to a Quadro 2 Pro. I have done both to all three different Geforces in my house and the results have been astounding.