Do keep in mind that my experience is really limited: I compiled neovim and it works fine with my .vimrc & all extensions. So there's no reason to start fresh.

However there's no difference so far: Syntastic checks are still synchronous, and I should spend some time to research alternatives (e.g. http://www.reddit.com/r/neovim/comments/2m1w3k/neomake_an_as...)