I have the boot camp dvd's and I have to say they are very challenging! I have worked out off and on for about 10 years now and have to say that these workouts are some of the best that I have done. What I really like about them is that there is just the bands that you use and not a lot of other equipment involved. I think that is why I got turned off by the firm, even though I really like the workouts it got to be a pain to drag out all of the workout equipment. So give the Taebo tapes a try, I am sure you won't be dissapointed.