Rated 5 out of 5 stars
I had been a happy Vimperator user for almost three years. But recently the development appears to have stalled, with very annoying bugs (that I've reported) remaining open for months and months. So a few weeks ago I finally gave Pentadactyl a try and I'm not looking back for a second (in spite of the terrible name). All the bugs that had annoyed me in Vimperator had already been fixed in Pentadactyl and the switch was really painless: I just had to rename my .vimperatorrc to .pentadactylrc and look into two or three options that had slightly different names or syntax, that's it.
I'm deeply grateful to the developers, I cannot imagine living without this add-on.