I am getting ready to order some new workouts (Drill Max, BM2,Imax2/Cardio w/Weights, and Power Hour +). I read a lot of posts about PH and MIS and it sounds like they are good workouts, but on the ultimate guide they are rated at 7.6 and 7.9 for intensity, a little lower than MM and ME which I already have (and love, by the way). My question is, will they still challenge me, or would I be better off with the GS series? I decided to go with full body workouts instead of GS because I have preordered STS and didn't think I needed both.....any advice??