drutgat,

From what you say (in posts above)... I would recommend that you go for the UltraPAK.

Once you start using BIAB, you WILL want ALL the RealTracks. AND all the RealDrums.

The drumming available in the full complement of RealDrums is INCREDIBLE. And fairly flexible. And REAL. The variety of styles is extensive.

The full version also a LOT more electric guitar styles and soloists.

And... you will be surprised at the rest of the RealTracks that will help flesh out rock productions (pianos, organs, sax, harp...)

fj