The new Asus A7V266 should be available by summers end. Reviews are very promising. Still not gonna use the new revision of the KT266 chipset though.
The Epox 8K7A is all you seem to hear about in this forum. One of the most stable & best performers, features. Uses the AMD 760 chipset.
The IWill KK266 is a great board based on the KT133A chipset. Just doesn't support DDR memory. People seem to either love 'em or hate 'em.
There are the 3 major chipsets & 3 great boards. Personally, I'd wait for boards basedon the new revision of the KT266 chipset. If you can't wait, then the Epox would be your best choice.