As a long time cVim user I've found out that 99% of my browsing can be done with its scroll up/down and open link features.

When combined with this switch to recent tabs extension, the mouse becomes almost irrelevant: https://chrome.google.com/webstore/detail/toggle-switch-rece...

Surfingkeys has a couple of features over cVim that I really like:

-pressing '?' on any page will open the list of shortcuts

-searching through bookmarks / history ('t') is prettier

-very useful feature of switching through all the current open tabs with link hints ('T')

There's one shortcoming I noticed, however, is that when you go to the link hint mode, there are no indication than you entered it. On cVim there's a "follow link" notice in the lower right corner.

I'm a fairly casual user though, someone else will probably find more differences and pros / cons for each extension

Why so? Firefox is still my browser du jour mainly because of Vimperator. I also use Vimium when in chrome, but Vimperator is way more powerful, and plugins are trivial to write: https://vimpr.github.io/plugins-en.html

you should check out VimFX for firefox, its modeled after Vimium but i like it even better.