I'm not entirely sold on the Ouya. I liked the concept, and continue to like the concept, but what works on paper doesn't always work right in practice. And I think the Ouya could be the latter. That said, it's just going to take a few quality games for my to pick one up, and I know there's one game that everyone's been raving about recently, but, I'd personally need to see more.
But I disliked a few things I heard, like negative things about input and lag, as well as the fact it'll be updating per year, like mobiles. I understand that's to stay competitive and lagging console hardware is a problem, but, yearly updates? Bit too much for me, for an entire platform. I'd love to be proven wrong and for it to work amazing but, I'll wait for that day, rather than buy it and hope for that day.