All of the packages include the latest versions of both Band-in-a-Box and RealBand. The Band-in-a-Box MegaPAK includes all 2,300+ MIDI Styles, 96 MIDI SuperTracks, over 300 MIDI Soloists, 200+ MIDI Melodists, 63 Artist Performances, 21 Nature Sounds and Percussion Loops and 1,000 Dubstep, Modern and Top 40 Loops. It also includes the MegaPAK RealCombos (Over 800 RealTracks in 350+ Bands). RealCombos are full bands of RealTracks and RealDrums instruments (no MIDI) in the same style. For example, the Jazz Swing 140 RealCombo includes 5 RealInstruments (Bass, Piano, Guitar, Sax, and Drums) that play at a medium swing tempo. Essentially, RealCombos allow you to hear *some* full bands of RealTracks without having to get the largest Band-in-a-Box package.
The UltraPAK includes all 2,800+ MIDI Styles, 175+ MIDI SuperTracks, over 300 MIDI Soloists, 200+ MIDI Melodists, 145 Artist Performances, 21 Nature Sounds and Percussion Loops and 1,000 Dubstep, Modern and Top 40 Loops. PLUS ALL of the currently available RealDrums and RealTracks Sets. Now there's over 3,100 RealTracks included in the UltraPAK. That's over 3,300 hours of studio musicians recordings!