Tough tape #1 by the FIRM is just that-TOUGH!!! I love it...but beware, if you don't like doing tall box leg press-it's not the tape for you-LOTS OF LEG PRESS! It does not have any ab work or floorwork. It's about 45 minutes total length and even though it's not cardio-your heart rate will be soaring!!! I usually have to stop and take a drink of H2O between the MANY sets of leg press. You didn't mention if you've used the FIRM before, if you haven't, Tough tape would NOT be a good first choice. As for Cathe's Power Hour-it's one of my new faves...very intense and to the point, a definite keeper. To me it is a faster pace when compared to MIS, but it hits all the parts in a new way when compared to MIS. And as far as step height-do what you're comfortable (read safe) with...I am nearly 5'9" tall and had prior step experience before meeting up with Cathe's videos, so I started at 8 inch height...but that's just me, do what's right for you!
julie