I think MM and Push and Pull are both great for strength training. The difference to me is the order in which the exercises are done. In MM, I feel my legs are exhausted really quickly because you do all the squats than go right into the dips, then after a short excruciating chest portion you are right back to the darn legs. By that point, my legs are shaking just to stand up. In Push and Pull, I do feel I get to the point of exhaustion, just not to shaking. She moves from one body part to the next fairly quickly. I still love absolutely both of them!
It's a continuing process.....