The old Roland Orch. S700 series lib has some good Big Bandish tpt shakes, doits etc that I still use. Also, the discs \"Killer Horns\" and \"Phantom Horns\" have small section phrases, swells but they add alot of funky realism when layered with a MIDI/sampled horn arrangement.
Just for fun checkout the demo of Korgs PA1 keyboard on their website.
I heard it a an Audio expo, I really thought a (real I mean) band had turned up. It was being played by a real musician, not some garage loop drum\'n bass merchant in shades. This guy knew how to make this keyboard work, no flashy licks or fx, just pure technique and musicianship with an awesome piece of kit. What you might think would take some time to set up and sequence, he was playing live. Granted, its all hardwired in (I suppose), but goes to show what can be done.