I'm on a ASRock X99 Extreme6/3.1 - More or less the same board as Dufus is using (the Taichi).
If it's down to the board, I'll be getting a Taichi, fits better with my build as well, and it's a good excuse to switch boards :D
Edit:
Dusting of my Windows 7, going to make a dual boot, just to see...