I like this one so much because it's tough, but not TOO tough. But more importantly, it's fun. There's only one, no two, intervals that I don't really love. One is sumos and the other is the last one with power-squats. But the rest of them are so much fun that it doesn't matter. It's definitely easy to learn.
The music is pretty good too. My daughter always asks if I'm going to do the workout with the "Surprise Song", which is actually Escape (The Pina Colada Song). I don't know why she calls it "The Surprise Song", but it's also my favorite part of the workout when it comes on.