Les Mills Combat is fun and challenging, that was a very good non-Cathe purchase for me.
I have a couple of the Atletica workouts and they are just not that challenging. However, if you want something for a light day, they do hit the spot, but one or two of those is plenty. I like the instructor, but I always feel like I'm wasting precious workout time with those. She's also in amazing shape and I can't help wondering how she got that body doing these workouts whenever I'm doing them. I know that's ridiculous but I can't help it.
HC is a doozy and will definitely give you a great workout using unique exercises, and the instructor is very likable. You've got to like planks and pushups, or at least not dread them, to enjoy those.
I'm loving Tonique now. Very challenging workouts, great toning for the lower half, but those are mostly a hundred variations on squats and lunges so if you have bad knees or don't like those exercises, that's not a good match. I am getting great results from them, though. Did I mention they were tough?
Eva