Let me know how you like it once you get it. I, too, want to mix up my cardio, but I'm afraid of getting yet one more fitness toy that I don't use. I had gotten the pilates half ball - it looks like the BOSU, but smaller. The workout that came with it was uninspiring so I only did it once and it's been gathering dust. Maybe I should try a BOSU workout on the pilates thingy (I can't remember the correct name). That way I'll actually get some use out of it.