I've listened extensively to the Baby Grand, the Concert Grand, and the Liszt, as I was seriously considering getting some VA's at one point.
Mikey is right--the Baby Grand is the sweet spot. It has a kind of magic that the Concert doesn't have. Yes, the Concert goes lower, but it's not as involving, not as--sorry--musical. That quality comes back when you move up to the Liszt, at a significantly higher price.
Never heard the Musics.