I am a big fan of Billy Blanks and own a number of his DVD's. I already have the Taebo ab workout which is part of a box set so it was good to purchase the Ab Bootcamp to make a comparison. I would say that the Ab Bootcamp is just as good. An interesting incorporation of new moves which are not featured in the original Taebo Ab DVD. I wouldn't say it is the hardest workout I have done, but it definitely hits your abs and you will break out into a sweat. All in all a worthwhile investment. You can never really go wrong with Billy Blanks; he is one of the better instructors out there where DVD's are concerned.