I did CIA 2901 - Amy's Kickbox Surge this AM and loved it!
Amy and the crew seemed relaxed, were having fun and sweating a lot.
The music was great - contemporary pop remixes and the combos were a bit complex but not overly so. I was easily able to keep it low impact. Big thumbs up from me! The med ball workout looked like fun as well, but I saved that one for another day.
Hardcore Kickbox Extreme is one of my favorites, and I think this one will be as well.