I have been attending the Shadyside studio for the past year. I will give AY credit for always giving you a great work out. You're going to sweat a lot and feel good about burning a bunch of calories. However, I do find all the classes (even amongst all the different teachers) very repetitive. I assume this is because the owners (Karen and Sean) have taught the vast majority of their teachers through their own teacher training program. There is not much creativity between the different classes; it's the same poses over and over. Since attending AY this year, I feel like I could now teach there too! It's that predictable.
They also don't offer much guidance for more seasoned yogis who take modifications or arm balances. I feel like I'm "showing off" if I modify, where at other studios I practice it's encouraged to try new poses. It's an "amazing" feeling when you're able to grasp a new pose.
In summary, great place to get some cardio and decent yoga; not great if you're trying to expand your practice. I mix it up with other studios. They do offer a wide assortment of class times, which is convenient.
P.S. Would love suggestions of other studios you'd recommend based on reading my review. Namaste.