Which Z170 board to buy for first time OC'er?

[supergtr]

I'll be looking to upgrade my old dual core wolfdale system fairly soon with probably a 6600k. I've never OC'd before and I am looking a stable board that will let me do some mild overclocking with at least 5 years of longevity.

I've looked at two boards that are within my budget. However, I don't know any if anyone on this site has experience with them.

ASRock Z170 Extreme4
ASUS Z170 PRO GAMER

 

[Tradesman1]

I'd go the Pro gamer of the two, almost went with it myself, but went ahead and stuck with the Hero (already have the Z87 and Z97)