I did Stretch Max and Core Max last night but I don't count them as being my official "firsts". This morning I did Low Max. Awesome workout! Not too knee friendly because it has a ton of squats and lunges, but as long as I keep taking my Glucosamine I should be OK. One thing I love about this workout is the refreshing choreo. She takes a lot of moves from previous workouts and puts a new spin on them. I see a lot of Step Blast moves repeated here, but in different ways. She also does little TIFT'ing, and you don't repeat the same step section 6 times, which drives me crazy about Cardio and Weights. I can't wait to try the premixes in this one!