I've used Vue w/ Rails so far and it's been pretty good. The one real complaint is that I really wish is that I could use Vue components (.vue files) in a better integrated way with the Rails asset pipeline.

react-rails does this really well, making JSX transformation a drop-in gem, vs. having to set up some kind of front end task runner of sorts and constantly having to commit compiled files and such.

Beyond that, Vue has been amazing, and I really love it.