I'm not aware of a single software package, but admittedly i haven't listened to them all-
as far a piano's go... i guess I'm spoiled i own a Rhodes, and an acoustic piano... and a Hammond... and everything else the yamaha S08 seems to do an OK job on-
I did hear some very convincing string patches - Symphonique (I think)
as to horns, I've yet to hear a convincing patch
but them maybe I'm just too picky...
usually it's apparent where breaths would be, or how the notes tail off