I was curious to hear to hear people's opinions of the Vandoren V16 for alto. I'm considering buying either an A6 Small + Chamber or an A7 Small + Chamber for playing as lead alto in a high school big band. I have been playing on a Yamaha 4C mouthpiece since junior high, but I'm ready to upgrade. I wanted to know if there is much of a difference between the two in terms of air support and darkness of sound among other characteristics. Thanks in advance.