I'm new to Cathe. (I have been working out with the Firm for the last 3 years) I have recently purchased Cathe's PS Legs and Abs, Power Hour, and the new step tape. I have used all of them and really like them. With the exception of Power Hour, for some reason I just can't get in to it. My question...is MIS like Power Hour? I'm planning on purchasing MIS and other Cathe tapes. Any help would be great!!!