Here is what I suggest. EVGA has this cool thing going on where they will let you try out any of there products for 2 weeks and all you pay is shipping to the next person in line. You do have to give them credit card info in case you steal it or something but it's really cool. I was able to buy all my PC components and put them into the 790i FTW mobo and try it out to see if I wanted it. And if a product arrives at you defective the person before you pays for it (unless it was broke in shipping then it just get's sent back.) But I think that if a product of yours breaks because of a faulty item they let you borrow they will replace it for you. It's pretty cool. So borrow the mobo you are thinking of and if you don't like it then get the other.
4 of my last 5 builds have used gigabyte mb's and i've never had any problems. i'm using ud4p right now good oc'er, nice layout, support for sli and crossfire . it has a 3 year warranty and dual bios so if you screw it up it's easily recovered. i'm running ocz 1600 cas 7 6gb ddr3 kit, asus 4870 x2, 2 wd black 640's in raid 0, 1 wd black 1tb and 2 sat optical drives plus my case has a built in esata port so 8 sata connections are more than enough. raid set up in less than a minute. download the drivers and latest bios from gigabyte.us and you'll be good to go