I've been using some high impact Firm tapes w/the Rebounder.
It's worked out very well, especially with Super Cardio. I never thought that I would be able to do this tape again, and now I just hop on my "bouncy" when the high impact comes on (which is a LOT).
I've also used TAM (Tough Aerobic Mix) w/the Rebounder. Make it much more enjoyable.
I tried Cardio Burn as well, but even the Rebounder couldn't save this tape for me. The instructor (Tamela "this is fun!" Hastie) is not my cup of tea.