Incorporating 5x5 was only successful in helping me regain lost strength on the flat bench. It was great for that though. Kept me real motivated having a clear goal each week, and seeing the progress. Especially when I was coming back much weaker. But then it got to a point where I hit a plateau in strength for a while, and my chest size wasnt increasing noticeable at all, so I went back to my old routine. The variety of rep ranges I use seems to work much better for me overall. Id still use the routine again to regain lost strength though. I also used it when I got stronger for a little something different. I ended up doing a 7x5 with 330 on flat bench, which was good for a change to keep things interesting. Overall I found it better for strength then size. But still I found my old routine to work much better for me in the end. 5x5 just helped to keep me motivated when coming back. Ill likely use it again to regain some of my lost strength though. Works well for a number of people so its definately worth a try. KILL THAT SHIT!!