Which ones have you tried? Vintage mode is most impressive considering it's so small (code-wise), but I don't find it particularly good at even the basics (a lot of commands have subtle behavioural differences).
It's better than IDEAVim, but certainly ViEmu and jVi are better. Maybe even Vrapper and XVim beat it too.
It's better than IDEAVim, but certainly ViEmu and jVi are better. Maybe even Vrapper and XVim beat it too.