The Extreme6 looked like the best choice due to the extra power phase and extra ports. Just wanted to see if there was anything that made the Extreme4 a better buy. The extra $$ isn't that extra considering the 6 is about a $35 difference. Thanks
The Extreme6 appears to be the top of the line for ASRock -- the Fatal1ty varient seems to have a couple of bells and whistles but a higher price because of the royalties. The Fatal1ty uses all of the same components as the 6 but adds a polling adjustable game mouse port and an IDE connector. Not worth the extra $$$ IMO, plus you have to see Fatal1ty's image all over the place.
The 4 is a very good mobo, but the 6 is a shade better. If you're keeping it for a while then the 6 is the better buy.