If I can make a suggestion, make a decision in this order
1. socket 1155 or 1150
The RoG series has motherboards of all sizes, for both these sockets.
-1155 is last generation, and you can build a system for a little cheaper this way
-1150 is newest fastest (arguably) generation
Both are fine for a new build, there isn't much difference between the two. Personally, I'd go with the newest, 1150.
2. Do you want a small, medium, or large case on your desk?
-mini-ITX is tiny
-mATX is small
-ATX is medium to large
Those are the 3 most common, ATX being the MOST common.
3. Motherboard. After you have decided those two, then we can help pick the right motherboard for you.
Or how about this, what is your total budget, and in what currency, and we'll help design a computer with you.