This one is a newer purchase for me too, I did a month rotation with the workouts, I just loved it, I hesitated on buying this for so long, and now that I have it, I have no idea why I waited. Have not had much chance to hit the premixes yet, I did an upper body one that was an awesome UB workout. I never do step, so I just don't do those 2 workouts, but it was completely worth the money even without those. Now that we are talking about it, I might go straight into 4DS again after I finish STS, seems like a good way to keep up the heavier weight work.