Have an Ouya. It's a poor tool for the job. I built an atom PC (in an old NES chassis no less) in 2011. Also poor for the job. Also spent well over $500 building it.
The Raspberry Pi works better than the Ouya for this sort of thing, but I had a mouse and keyboard hooked up to make it work - once again Wife Acceptance Factor.
I think I can swing $500 on one of these, and I know it's going to work with XBMC, and I can even guess that Valve will even swing contracts for Netflix/Hulu/Amazon Instant/Pandora, and maybe, just maybe, I can get it to replace my current Ouya/Roku combination for TV viewing.
And it will play games, and not just smartphone ports.