I have been using BIAB for Windows for years. I am switching to MAC for personal preference, as far as music is concerned.
I cannot use BIAB for MAC as well as I use the other version because it still lacks a Karaoke window (Lyrics BIG Text Window) and it doesn't import MIDI files, at least with the same effectiveness the Windows version does. BIAB for MAC does import MIDI file, but it's too sensitive to redundant or strange controllers and the result does not work as expected. The Windows version is much more reliable for that.
These are important features for the way I use this fantastic program.
Maurizio