Quick pro tip for zz, I pair zz with search/jumps, so the next match/jump location ends up centered.
Edit: more elegant solution https://news.ycombinator.com/item?id=34308688
" Center screen on next/previous selection.
nmap n /<CR>zz
nmap N ?<CR>zz
" Last and next jump should center too.
nnoremap <C-o> <C-o>zz
nnoremap <C-i> <C-i>zz