Which Maximus V are you considering...The Formula, Extreme, or Gene.
For a mini ATX build the Gene is obviously superior, because in many cases it's the only one that's actually compatible. The Maximus V Formula is a toss up with the Gigabyte and the Extreme is Superior.
I found something which is in my opinion is better.Msi Z77 mpower big bang. I am going with this mobo and a i5 3570k @ 4.5ghz corsair vengeance 8gb kit and a Msi HD 7970 lighting or 7870 Hawk depending on how much cash I have and a H100 watercooling.