do you need the mSATA? Do you plan to OC? there's the question right there. If you want to do some very simple and basic OC'ing then I recommend the MSI (I personally run MSI motherboard and graphics card. I'm new to OC'ing and it seems to work great for me.)
If you need the mSATA port then go with the Gigabyte.
If you don't need mSATA and don't plan to OC.. then well it really doesn't matter I don't think lol