I used to come here religiously - about twice a week for over a year. The classes are challenging and most of the teachers are fantastic, though don't expect any sort of modification or personal attention unless you're part of their exclusive group of buddies.
I stopped going to Amazing Yoga because I practice yoga as a stress release and I cannot do that when the studio is so crowded that I have to be watchful of my every move possibly hitting the person next to me! Not to mention others are sweating all over my mat and I'm doing the same to them...it became hard for me to enjoy it as the studio got more popular.
Until they get a bigger studio or limit their class size significantly, I won't be going back. I know I could go to the other AY studios, but the teachers I like only teach at this one.