I ordered the same one you did. Actually, for some reason, I thought I ordered the Conditioning one, but I'm guess I didn't. I really like the Cardio Blast workout. It's pretty intense, but, just like spinning, you can work at your own level. I'm pretty comfortable on my treadmill, but there were a few times when I was holding on to the rails!
I was dripping by the time I was finished.
Joni, I'm not even going to try to predict whether or not you'll like them!