I haven’t tried Insanity but I have heard great things about it. It involves interval and circuit training at a high intensity pace, which (paired with a clean diet) will definitely help shed pounds. I’ve actually heard more things about P90x, since it uses muscle confusion, which makes your muscles leaner and stronger. Give them a try, it wouldn’t hurt (or may? lol) What ever you do, put your all in to it. Do not cheat yourself and half a** it, or you will get just that in return. Good luck!