Hi. I'm looking for a new Alto mouthpiece and have narrowed it down to the Meyer 5M series. On wwbw.com, they list a Meyer 5 Large (Medium Facing) and a 5 Medium - as well as some others. I'm assuming the 5 Medium is medium chamber, medium facing. Does anyone have any real-world (meaning you've actually played on both of them) experience with the tone quality differences in these two mouthpieces? As with a lot of people, I'm in search of a Paul Desmond style tone. Thanks!