I've been practicing yoga for ten years and thought I'd give Bikram a shot as a new challenge. I chose Bikram Yoga Avondale simply because it was the closest studio to me. Shelby and John run a wonderful studio - the atmosphere is friendly, calm and supportive, and the instructors are extremely knowledgeable. The studio itself is pretty stinky, but that's true of any Bikram studio because of the heat and sweat. The studio room is very large with plenty of room for about 2 dozen practitioners, all of whom are super nice.
I kept it up for two months until A) I got bored and B) my travel schedule heated up again. That has nothing to do with this studio at all, of course. The boredom came from the class being exactly the same, down to the script spoken by the instructors, every single class. Again, not a studio issue; this is one of the rules of Bikram.
But if you have a longer attention span and less crazy schedule than I and you live in the SW Valley, give Bikram Yoga Avondale a shot. Your first class you'll feel like you're dying. Your second class you'll feel like you're flying.