Well, don't want to start any flame wars, so I'll give you my opinion (others will give their own).
I personally would by the ABIT board. Why? Easy, it's not made by ASUS. This isn't because of performance issues. I'm sure the ASUS boards perform well. It's because ASUS has the worst customer service & tech support of any company on the planet. Now I see you can't even contact them (email or by phone) from links on their site anymore. It's pathetic. They are also "famous" for introducing boards well before they should. Hence, it's common to buy a brand new "just released" board (like I did) from them & a year later it's on it's 5th PCB/BIOS revision. But, I have (unwillingly) become a master at configuring/flashing/updating BIOS
Ugly, real ugly.
Considering I've owned a few ABIT BX based boards, I can tell you their tech support returns emails in about 2 - 4 days (usually - they can be slow too sometimes), or you can call them instead if you like. I find this to be way more valuable than the "2 points" higher the A7V might score over the KT7 in some synthetic Sandra benchmark.
If you want to go with AMD 761 based board though, I'd wait a month or 2.
Cheers,
Ron_Jeremy
If you loan a friend $20 & never see them again, it was worth it.