I've done both Power Yoga 1 and 2 with Bryan Kest, MTV Advanced Workout yoga section, and Crunch Joy of Yoga; and this is going to definitely be a keeper in my rotation!!
I found that Michi explains the breathing with each move extremely well, more so than even Bryan does. This workout wasn't very aerobic for me; but, the balancing was extremely difficult and challenging. I felt relaxed after the workout as well.
The setting is outdoors in a desert setting and she has two other students, one that shows beginner modifications and one that shows advanced/intermediate. I think this is a tape you can definitely grow with and it is relatively short, about 35 minutes. I'd give it an A.
Instructor comments: She is very thorough and explains the breathing well. She doesn't seem as flexible as some instructors in yoga, but definitely has balance!