Great review! I've done both Insanity and Insanity Max 30 and am loving how Insanity Max 30 pushes you as hard as you can go and makes it okay to "fail"....you are supposed to find that point where you need to take a break. It's all about making YOUR times better....not competing with others.
Insanity Max 30: the ultimate challenge
http://www.gettingfittogether.com/