not sure about the negatives for RealBand. It integrates with BIAB perfectly and I've never found anything I couldn't do. it's free if you have BIAB and unless you are a power user i can't see the point in mastering another piece of software. RB is a good way to start and only when you find you are frustrated that it won't do something you want is it time to look for another DAW.

for the average home recorder like me creating BIAB tracks, editing them, generating solos, and then recording vocals and my own instruments both as midi from a keyboard (with access to soundfonts, HIGH Q patches and third party fx incl 64 bit using jbridge) and live from a guitar DI'd and edited with amplitube what do forumites think i am missing (and therefore so would the OP) by just sticking to RealBAnd?