Awesome to know it's out of beta. Hope there is more Onyx documentation available since the last time I tried to learn about it using the Sampler I was a bit confused with some controls and how to implement them.
You should also check out the developer forums (http://forums.enyojs.com/). Experienced developers and the Enyo team both love to help out.
It seems the enyo team is taking a more holistic approach than many other js frameworks (which I guess could be a positive or negative)...things will really get interesting when the visual app builder is released.