If you only want to check out the Midi functionality, you may consider the Pro upgrade - $79. For my needs, I only use BIAB for Acoustic Bass and RealDrums for Jazz and Bossa. I've never been totally happy with with RealTracks; especially for Jazz. You can find a few discussions on the forums about this topic.

So far, I like what I've seen with the new Midi SuperTracks. The phrasing is pretty good AND the notes can be modified. Hopefully, there won't be much of this but at least it is available. RealTracks does not offer that option.

You may want to call PG Sales and discuss your needs.

R