as with most parts, it's personal preference. I have had better luck with ASUS than Gigabyte. but both are very good companies, and have a good rep. I think the ASUS would be the better move, but again... they OC nicely (usually) and are pretty good with tech support, drivers, etc...
Dell 4K S2817Q / Logitech Z-680 / Func MS3 Mouse / Corsair K70
NZXT Source 530 / i7-3770K / Corsair H100 / ASRock Z77 Extreme4 / SoundBlaster Recon3d
Samsung 850 PRO 512GB SSD/Seagate 1TB/2TB/WD 2TB
4x4GB Corsair Vengeance 2133 / PNY GTX 980 ti/ Seasonic M12II 850W