you can check this out before u decide mate.
ASRock Fatal1t z170 gaming k6 review
http://www.tweaktown.com/reviews/7279/asrock-fatal1ty-z170-gaming-k6-intel-motherboard-review/index.html
Asus Z170 Pro Gaming / Aura review.
http://www.kitguru.net/components/motherboard/ryan-martin/asus-z170-pro-gaming-aura-motherboard-review/
if you will OC fatal1ty z170 k6 is good with 12 phase power deliveries for stability and durability, and has a good price / performane and has good looking too (my opinion).
Meanwhile for Asus it's good mobo too and has cosmetics RGB Led but Price will be a problem.
Instead of that why don't you pick the latest Z270 Chipset ???