Hi,
I would suggest that you get the Radeon card that is
"Built by ATI" rather than the ones that are
"Powered by ATI". I have read reviews where the ones that are powered by ATI performed lowered than the "built by ATI." Also there's this thread where they say that the Radeon 9000 performs lower than the radeon 8500LE
thread. Also the 128MB radeon card performs better than the 64MB.
I would suggest that you get the 64MB unless you have the money to buy the 128MB card. Here are some reviews
link,
another review.
I would suggest you that if you want more information to do a google search.
I hope this helps!
P.S.: I have the radeon 8500LE 64Mb and I love it.