There are many features I like but Personally what I never liked about Roland arrangers is the sound of the Brass patches,...there is just something about them to my ears that lacks the realism Yamaha Brass has IMO..
Brass is a collection of instruments, from which trumpet is one.... If you meant a brass ensemble sound, you should have said so
And while the sound is from the JP80, its of the same quallity as other instruments with super natural acoustic sounds, like integra7, Fa08 or BK9...nas they all use the same samples and the same technollogy aswell as the same effects.... Its all the same sound engine
Well then for that matter the Yamaha Trumpets are my top choices also if that helps you.