For me the ps 6.0 85 (stock) is the epitome of plow through. I think it is because of the small head. In my opinion this racquet favours a low and deep trajectory. If you have a relatively linear motion on your groundies you will get plenty of plow through in stock. Obviously more lead on the head will give you even more plow through if thats what you want.
Wilson ProStaff 6.0 85 - bab. vs nat gut 17 M55 C53