I've set a good order on what I want to do after finishing P90 which in turn might help you.
I'd like to do P90 in order to get fit and into shape, and then do P90M. After P90M I'll switch it up to either some Zumba (not classes, but the videos) and then move onto P90X, and if that's successful P90X+ and then P90X2. Only then would I move onto Insanity, Body Beast, or the LesMills workouts. It's good to have a set list of goals and an order to it on what you want to achieve.

Cheers.