Good JavaScript front end libraries?

I'm interested in finding a way of organizing our frontend code. Right now, it's a C# backend with a jQuery plus view/presenter pattern frontend, and the complexity has sufficiently grown that it's not the way forward.

I'm looking for something to replace our frontend, with one-way data flow (so no Angular/Ember).

Things I'm looking at right now:

- React + Redux: seems to have a lot of traction, an existing ecosystem, and a relatively small surface. Not to impressed over the fact that it looks like very watered-down FRP

- Cycle: looks interesting but seems to have very little mindshare comparatively. Don't know how it behaves without Node