I love Amy but I REALLY love Kickbox Burn! There are 4 sections so you can do one or more of them at a time to shorten it up if you don't have time for the full hour. It's tough! Heather is a great "new" instructor, and kudos to Patrick for introducing her to "the world"! Apparently she will be coming out with a DVD of her own "soon" so I will definitely look for it.
I like Body Box, but I agree that some of the moves are either a bit tricky or hard to grasp, at least for me. In particular I am having trouble with that move in between the sections where she goes to the floor, turns around and goes the other way. Yes, that's an exceptionally bad description--sorry--but I haven't really figured out how to do it right and/or as fast as they do in the workout so it's hard to describe!
I will give it another chance or two since it could be that I'm just somehow missing something obvious in the move that will make it simpler for me choreographically. It doesn't take up as much room as some of Amy's earlier kickbox DVDs.
Conni, there are parts that are high impact, but easily modified IMHO. I did so in the last section that had burpees since I didn't have a lot of burpee energy left by that time.