I've been very happy with gvim for many years, so I don't think I will change any time soon (although Emacs + evil is very sweet too, specially writing Clojure).

But there's one thing I can't really understand and, for me at least, is not an advantage working with code: why using tabs?

It feels like an anti-pattern when I'm using (g)vim, I use buffers and I split in few windows, list buffers, change buffer, etc; and I never leave the keyboard. I guess it is "modern" to use the mouse, including the file explorer (I use :find mostly, then ctags navigation), but it is something that doesn't work for me at all.