finally pulled the trigger today on the megapak upgrade. If I find it to be the indispensable tool that you all swear by, I probably will go for more realtracks in the future. Need to learn the basics first! Over my entire 20+ years of home recording, I have spent less than $600 on music software:
PowerTracksProAudio: $69
PTPA upgrade: $19 or $29 can't recall
Tracktion 3: $20
Jamstix 1: $99 (maybe, I forget)
Jamstix 2 upgrade: $49, I think
ACID: $30
EZDrummer 2: $130
EZDrummer Expansion Pack: $30
Groove Monkey midi expansion packs: $22
BIAB: $99

So this was a big decision for me. See you around the user showcase eventually!