paul, Band in a Box is really amazing software when you use RealTracks. the accompaniment it generates is really unbelievable! personally I do not care for midi so I would never have purchased it were it not for the RealTracks.

so I have two suggestion should you decide to purchase...

1) buy a version that includes all RealTracks. like you I have no interest in jazz tracks but the individual RealTrack packs are very expensive compared to buying everything up front

2) buy today or tomorrow while they are running a sale. I bought 2012.5 in Sep at full price because they had no special offers for first-time buyers. then, less than 3 months later they released version 2013 with a big discount for first-time buyers. I not only missed out on the big discount but had to pay for an upgrade! So if you wait until 2013.5 you may miss out on the nice discount.