I've never played one, but I hear Morgan makes a pretty good alto mouthpiece, although I've heard his bari and tenor mouthpieces aren't as good. I would suggest trying one out. I know you can order one on www.wwbw.com and send them back within 45 days if you don't like them. I would suggest ordering a few differant facings and seeing which ones you like/don't like and sending what you don't want back, even if you send all of them back. Or if you don't have room on your credit card to do that, just order one at a time and try them out. Make sure to write down what you thought about each piece as you won't be able to compare them back to back.

Overall I would say that Morgan's mouthpieces are of very good quality. There are some floating around that aren't as good because they've been used and abused in the wwbw shipping and swapping chains. But, I own two morgan's myself. I have a 6EL Excalibur for alto and an 8EL Excalibur for tenor. I don't know whether you're looking for a more classical or more jazz mouthpiece but morgan offers pieces for both styles. For alto, I would have to say either the Excalibur or the Jazz. The Excalibur is a thinner bodied and brighter kind of piece (so thin that it actually requires a clarinet rovner) and the Jazz is probably closer to a meyer and I imagine darker than the excalibur from what i understand. From what i've heard and from my own experience you should be extremely happy with either an excalibur or a jazz on alto. All you have to do is decide what facing and chamber size (E=small; EL=large) are right for you.