Can anyone compare the new Selmer student model AS500 to the AS300 that it replaced? I'm a trumpet player who helps out on alto sax in a pep band I advise. I've got a used AS300, which is what the music school here recommended. I also have a nephew who's ready to start on alto sax. I can get an AS 500 locally for $795, or I can cruise the net for a used AS 300. I know there are other models out there, but I've had a good experience with Selmer, so that's what I'm shopping for.