I have gotten so confused by the number of student altos put out by Yamaha. Yas-21,Yas-23, Yas-26, Yas-200, Advantage, Yas-280...did I miss some? What are the differences? If I had a row of all of them in front of me, in mint condition, and I had to pick one to be my only horn...forever, which one would you choose and why? I had thought the 23 was great, but there have been so many more models come out since. Please excuse me if this has been asked before, I wasn’t able to find anything in searches.