The insanity video is a pretty good routine once you start the second month. I would call it a 8/10 on the hard scale. The first month would be a 6.5/10.
The entire workout to include the diet I would rate a 8.5/10. I loved it because it took out all of the work creating my own routine. I like to lift and am not as use to doing a super amount of cardio.
This type of workout makes good on all of the promises it makes.