How I boosted my Vim
This is actually a really good guide. I use vim daily at work, and my .vimrc shares most of these settings.One big productivity boost for me was remapping the Escape key to something a little more convenient. I just remapped the ESC key altogether, but this can throw you off if you find yourself working at lots of different computers. If you prefer something less permanent, you can map a key sequence to ESC. I like this one, which maps 'sdf' to ESC if you're in insert mode:  imap sdf 

jkjk is also a sequence I've seen used.