The whole dual BIOS thing is nice, but I won't be using it. Once I dial in my BIOS, there will be no changes to it what so ever except to activate RAID soon.
You also seem to forget that, while it looks cool, and runs cooler by maybe 5*, Z77 is a half function chipset unless you have a ivybridge CPU, which I don't. So if I get the Gigabyte, which looks better, and seems to be better equipped, I won't get Native USB3, PCIe 3 and I suspect the Z77 SATA3 (that is the only thing that explains why mine are not working besides a board failure).
I am not sure. I will wait for jason to chime in before I make my final call. Unless he can find something that overclocks better or equal to these in ATX so I don't need a case too.