I had 2 of them when they came out (Track staffer at the time) and it was probably my favorite ball of all time, I also kept mine in my arsenal for a long time as they never seemed to lose reaction.  I had 1 drilled pin up, polished, that one was my favorite as it created a strong but controllable down lane motion.  I also had 1 pin down that I kept at 2000 and used on heavier oil patterns when I needed to create a bit of angle but still have some teeth to it in the mid lane.  I don't think you can go wrong on the surface, just need to match it to the volume you are bowling on.