I would wait to see how compatible the new Gigabyte UP5 TH and UP7 are with Mountain Lion. I'll bet they'll the much more than any of those ASUS boards. I have an ASUS Z77 board, all I'm not sure if I'll ever get sleep working, and it is pretty unsupported in the hackintosh community, so I wouldn't advise going with ASUS. However, if you must, I have seen fairly successful builds with some of those ASUS MoBos around the site, just search and I'm sure you'll see them too.
The latest P8Z77 V Pro/Thunderbolt already has TB incorporated in the board. At about US$200, that seems to be a good buy. Although, the new Gigabyte GA-Z77X-UP4 TH is better (less worries) if installing Mountain Lion due to compatibility issues.