My twist on 5/3/1. After the "money set" go an do 3 sets of 5 at 80% of Training Max weight. Been doing this for awhile with a couple of clients of mine who are pretty strong and they are improving at a faster rate (which is important to my financial being) and feel that it seems to works the muscle better.
also the assistance exercises pick smart big compound movements. I see alot of people here are getting lost in the details again.
Lastly the 5/3/1 works best for MOST people on 3 days a week program. It is very hard to progress on 2 upper and 2 lower days a week for strength. It was outlined first (5/3/1) in Wendlers 3 days a week book as a 3 day a WEEK program. Remember that the Westside methods have 2 Max Effort and 2 Dynamic Effort days a week. Some people are doing the 5/3/1 4 days a week all with Max Efort intensity.
Pick your battles my friends: Do you want to get strong or do you just like to lift weights?
edit: these are my observations and ideas.