Thanks again for all of the questions you have answered for me in the past. I am back again looking for advice. I currently have all Gym Styles, Slow & Heavy, MM, ME, Buts & Gutts, Legs & Glutes, and the Pyramids (along with various other cardio/circuit). Are there any other strength DVDs that you would consider a "must have"? I think I need to work primarily on building strength. I value all of your opinions. Thanks!