Funny this topic came up. I borrowed Complete Aerobics & Weight Training (BBS2) from my SIL a couple weeks ago. I had heard good things about it. I previewed it and had my doubts, but it's not the same as actually doing the workout. So I did it and was disappointed at first that I barely worked up a sweat, but then I was pleased at how much progress I have made over the years, not only in endurance but also strength-wise. Just as I was getting into the weight portion it ended. The aerobic portion was definitely beginner. Yes, I am now used to doing a gazillion reps and can say I'm lovin' the Cathe strength workouts. No offense to those who enjoy the Firm, but it is not even close to advanced. I do have to say though, the names for the equipment are really silly to me; Fanny Lifter, sculpting stick, twigs. It kind of looks hokey and junky to me. The other thing that really, really bugged me was that not only was it not chaptered, I couldn't even fast forward to the beginning of the workout. :-( I am so pleased with Cathe workouts and I know I'm not missing anything with the Firm. O.K. so call me a Cathe snob.}(