My Shock is drilled pin in the ring with a motion hole. The ball is a beast. I had several bowlers tell me I ruined a great ball. I don't think so. I don't use it all the time, but it normally proves to be a great ball when it comes out. I try to keep the surface around 3000 with light polish.
I'm debating on adding a hole on at least one of my Tags. The balls were great out of the box. Still good but I think they could use a touch more pop on the back end. But we'll see. I haven't resurfaced them yet. That will likely do it.