My vote is go ATI.
Running a x800xt PE using Omega drivers the difference in IQ (image quality) and performance level worth trying this beta driver.
If you do go with stock/WHQL drivers I personally recommend 5.7 or 5.9 without CCC, get the classic version and skip the .NET you have to add to run it (CCC). ATi tray tools more than enough for tweaks. If ATi does not archive those drivers anymore PM me or post can give you a couple links.
BTW got a price range? Sorry if that sound too personal but might help some make the call...
g/l and Have Fun <g>
