Just wanted to share my experience with p90x. So I have been doing it for the last 11 weeks (two more weeks left) and I am absolutely loving it! Besides helping me get into better shape and putting on muscle, it has helped my self confidence big time. Anybody who has ever completed the 90 days, I applaud you for sticking with it. It is very tough! As far as for anyone looking into trying it, it is very time consuming (Hour to a hour and a half) and you do a ton of pullups (one of the discs they do close to 150 pullups!) But in the end it is well worth it. The end result of p90x, regardless of if you did it for 30 days or all 90 days, is you are working on a better you! In the end, that is all that matters. As Tony Horton likes to say, "Do your best, and forget the rest!"
So go press play and bring it!