<< Alright, narrowed down to 3. The MSI KT266a PRO 2, the Asus A7V266-E, or what about the overlooked Abit KR7A? Asus is a bit more expensive, almost $40 more than MSI, but is the performance increase really worth it? >>
Of those 3 I'd go with the Abit.
As for the original question I'd without a doubt get the AMD761 over the VIA KT266.
You'd have to be nuts to pay for a KT266 mobo now.