FWIW - I have been following this thread and think it breaks down into two things:

1-With RealTracks you are limited to what BiaB gives you. That is great for jazz, country,blues, etc with a few snippets of other genres.

2- With MIDI there are no limitations. With good MIDI sounds, a little imagination, and a little MIDI knowledge you can create any genre you want. Note's BiaB styles proves that. BiaB MIDI styles are not set in stone. They can be increased or decrease in tempo with no artifacts. You can change instrument sounds plus a lot of other control over the styles.

I believe that I am in the minority with my song using virtually all MIDI, thus my bias thoughts!

YMMV

Whenever I get something stuck in the back of my throat, I dislodge it by drinking a beer.
It's called the Heineken Maneuver.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware