OK I adore Cathe but I've done all her cardio workouts so many times I can do them in my sleep. I'm bored & I really really need to mix it up a little. I've tried running & jumping rope, but they both bore me to death. I use machines at the gym but normally don't have time to get there during the week. I just love step & am looking for something as fun & challenging as Cathe. Any suggestions?