I use Emacs for almost all my work, but I find Vi(m)'s editing capability is superior. I use evil-mode and it does extremely well in emulating Vim. Even text-objects and ex-commands are available. ace-jump-mode and undo-tree are two other extensions that significantly improve my editing experience.

I find dired, tramp, org-mode, auctex, magit and good async support indispensible and the Vim equivalents are either less powerful or non-existent.