What are you looking to do with your card? Simply games? or is it DVD playback, multi-monitor, ect...?
The 8500 is a very good card, as is the GF4. The GF4 has more brute force, but the 8500 has some nice programable features that people can use to power games more to their tastes (see Doom 3 on ATI posts and news). If you're only gaming, I think the GF4 is probably a better card. However, the 8500 has nicer DVD playback, and a more consistant image quality for 2D.
Ultimately, it will be personal preferance.
Do know you can buy the retail LE 128 from ATI and it has the same memory, and is easily OCable to well beyond the non-LE specs? Might save you some money.
"Search your feelings you know it to be true, I am your... twin sister" - Darth Vader