I just recently purchased a SS tool .
Been using ProChem's tool for 25 years
The SS works great only when its dialed in right but cant dig into the corners like the PC does .
The PC tool is crazy great on detailing step corners and face side on stair cases .
My big complaint with the SS would be the hand grip area is over sized and hurts the wrist after 30 -40 mins . Im 6"5 with big hands .