I know this is an old post, but if it doesn't help you specifically, it might help someone else.
I have to recommend the ASUS because of my first-hand experience with it and similarities to your other components. I run identical processor with very stable OC at 4.0 GHz. Also, my RAM is similar although I am running a single 4GB kit (F3-12800CL8D-4GBRM). With some minor BIOS tweaking I got the RAM running at 1600 MHz (it defaults to 1333). Then a simply change of the CPU Ratio to 20.0 gave me a no-hassle, stable overclock.
But to be fair I have not read up much on that particular Gigabyte board.
Yeah i went with the gigabyte my friend had the ASUS board abd it works great for him and i know ASUS has amazing customer service. his board didn't work when he first got it but within 3 days they sent him a new on free of charge. He uses a 1055t and is at 4.0 im using my 965 on my 890gpa. really looking at them there is hardly any difference