+1 for Reagent. Best UI library that I've ever used. Om is really confusing to me and requires too much configuration to make it usable. Reagent works out of the box and just makes so much sense. It never feels like you're using a framework, it just feels like using a tool to abstract away the complexity of rendering from your UI logic. It's really enjoyable to use. Then again it hasn't been updated in six months so there's that...
