AA0, I don't see the big difference. In fact, to me it looks worse for the 8500LE as you have to flash the card, this risking it. When oc'ing you use software and can always restart in safe mode and set it back to default speed if it doesn't work, that way it looks like an non-tweaked card if you have problems with it so you have to rma it, whereas it shows on the LE when you've done a bios flash = no warranty. And the 8500LE won't do much without the normal 8500 bios, plus as trickster2 mentioned it isn't everybody who get good results even when flashing the bios.
That being said, I did consider getting an 8500(LE) but hearing that the LE didn't oc that well and about the flash-problems and knowing ATIs former problems with drivers (*cough* my Tv-Wonder *cough*) , though many people say that the 8500 have good drivers, I decided to get a Ti200 instead. That it was quite a bit cheaper was also good of course.