I've been using Mp3Tag for years. Recently tasked myself with organizing my evergrowing music collection and decided to try other options. Guess what? None of those is close to Mp3Tag feature-wise and speed-wise!
One feature I liked in TagTuner though - rename current folder using tag data. That is, if I'm on the file with Artist X and Album Y, pressing the key combo would rename the parent folder according to my pattern as "Artist X - Year Z - Album Y". Huge timesaver! Would love to have this feature in Mp3Tag as well.