I started Derek's Powerlifting program after completing his Classic program and I am thoroughly satisfied with the results. After completing the 8th week I had increased my bench to 300lbs, my squat to 370 and my Deadlift to 465. I have never been stronger in my big 3 lifts in my life. The Epley Formula was decently accurate as well with a 96% accuracy for what I tested and what I was actually able to rep for one.