Mark, There is the answer –if you are saying you were fond of the sound of Harry James’s trumpet and I took trumpet only to sound like him, then we judge with different criteria in turn making all trumpets that Technics created OK and depends on who.
When you press a key you can only get what has been programmed into the keyboard. To have the instrument respond to how it is being played is another discussion. Yamaha is selling a Trombone sample, which does some of what you want, I think its $49 for the one instrument. Keep in mind the more you want the instrument to do the more memory you need.
John C.