I know this is going to sound silly, but I'd go so far as to say that Spacemacs is one of the best editors ever made.

But it's not nearly as portable as vanilla vim. Even vim with several plugins, including vimproc and Unite, I've found is a lot more portable than Spacemacs. Spacemacs is a lot slower as well.

For me, unfortunately portability is really important, which is why so far nothing has been able to sway me away from my trusty tmux + vim + Unite combination.