Which are your favorites?

I have used the IdeaVim plugin for IntelliJ, and honestly it was so bad it was worse than not having the plugin at all. Maybe 20% of commands actually behaved consistently with vim. And IIRC, a decent chunk of my preferred vim functionality was outright unimplemented.

Perhaps ironically, I didn't have any such problems with the (commercial) plugin for Visual Studio. It worked very well. It cost $100, but my employer paid for that.

I've basically given up on IDEs after that and just use vim itself. If you know of any that have a really good vi-mode plugin, I'd love to try one!