After reading all the great reviews and it being a real bargain I brought this. In my opinion it's really not that good. I use workout dvds a lot (i've got about 20 of the things and use them in rotation about 4 times a week) - this isn't particularly hard work compared to others I've got. The trainer continually counts to 8 throughout the entire workout but misses out and adds in all the time which means you can't keep count yourself, it doesn't work both sides of your body equally because of this. When you get to the get to the abs and thigh section the instructor tells you not to rush but then you have to keep up with a quick beat - this for me is an easy way to do a exercise wrong and injure yourself. It won't become one that I use regularly.