Just did my first day of "Insanity MAX 30" and I feel completely and utterly defeated. I felt rough when I first started Insanity last year, but this is a different kind of defeated. I don't feel sore, i just feel dead and unable to move from sheer exhaustion. I don't think I even sweated this much any other time in any of the other workouts from the old Insanity I did. At least I know it works, but it was evil.
I've never liked any of those gimmicky programs. Not saying you aren't working your butt off and this isn't a jab at you at all (just to clarify). However for me (and this may only apply to me, people are different and that is fine) just lifting/doing cardio 5-6 times a week gave me great results, along with actually eating right and staying in a caloric deficit (which if you aren't, good luck losing weight). It isn't overly complicated and it is highly effective, plus the level of consistency you get from something like that can be great. Now any day that I don't get to run like 5-8 miles, I feel terrible. Obviously rest days are important and I do keep that in mind, but once you get yourself into making healthy living a habit, being out of it becomes more inconvenient than anything else. To each their own tho