Has anyone done the P90X? INSANITY? I want to invest in one of them to get in shape/lose weight for my wedding, but I'm trying to figure out which one is better. From the reviews I have read about each, they both seem to tough, but in different ways. The P90X requires that you have some equipment at home, where the INSANITY workout doesn't require any additional equipment aside from the DVDs. Also, for those of you who have done either of these, how much room do you need to do the workouts in your house? My basement is probably where I would do the workouts, but I'm not sure if I have enough space. What kind of equipment do you need with the P90X?