I'd get a different case and get the R4E. Any of the ASUS lines are good. Personally I use a Sabertooth X79 and for what I do it's great and has a 5 year warranty.
Q - Do you need 4-WAY support?
Here's what the Overclocker's are using - http://www.overclock.net/t/1167939/sandy-bridge-e-overclock-leaderboard-owners-club