Need some advice regarding my Motherboard : Gigabyte Z97MX Gaming 5

[malfuria]

I own a Gigabyte Z97MX gaming 5 . Things is that my Case supports ATX mobo and i'll be having some gap, since mine is smaller (mATX). I recently bought it so i could ask for a replace ( i haven't unboxed anything yet).
I would like some advice wether it worths the effort waiting 5-10 days and paying an extra 10-40$ for a replacement like Asus z97 pro gamer or Gigabyte Z97X gaming 5.
I also plan to do some medium OC for both CPU and GPU if that matters and my specs are as followed :

Case : H440 Nzxt
Ram : G.skill 2x4GB , 1600mhz CL9
Psu : Corsair RM650M ( this one is tier 2 A i think )
Mobo : Gigabyte z97mx gaming 5
Storage : Kingstone hyper x savage 240gb
CPU cooling : Raijintek Triton core AIO
Case cooling : 1x rear fans 140mm , 3x front 120mm fans
CPU: i5 4690k ( oc to 4.0 - 4.5ghz )
GPU: Gigabyte gtx 970 g1 gaming

 

[vlmem10]

hope this helps,

http://motherboards.specout.com/compare/3455-4970/GIGABYTE-GA-Z97X-Gaming-5-vs-ASUS-Z97-PRO-GAMER

 

[malfuria]

I've already checked that,but i don't really understand all the features and their differences.The main purpose of this rig is gaming and i don't plan in SLI. I just wanted some advice on this matter. Appreciate your help anyhow !