I truly love StepMax, StepWorks, PowerMax & StepFit. I love all the different steps in them and I like how Cathe incorporated enough jumps to make them challenging. I also love the length. Even though they are long, they are very doable for me. I am still trying to figure out why Mega Step Blast was so hard for me yesterday. I am wondering if it is all the step up and downs in it. I am 5'4" and used a 8" step and I noticed right away my legs were getting tired. 20 years is a long time to be working out to Cathe. That is awesome!!! Peggy