I still have one with about 1,000 or more (probably a lot more) games on it. It's polished, and maintenance has never been a big issue. If anything, it's told me when I needed to really clean it.
I had another one at one time, too -- sanded. Never could get it to work and I finally sold it.
How you drilled the ball and especially how you prepped the cover meant everything. I think that goes without saying for anything Mo Pinel was ever involved with. The drill pattern on the one I still have is one of the strangest things I've ever seen. It ended up about 1.5 x 4 with a crater weight hole about 1.5 down and to the left of the PAP, big-time pin-out ball with the pin way over to the right of the label and up a bit.
But give me some medium-dry wood lanes and I was gold with that old ball.
I also had the Pro XS I and II after that; never did like either as much as I did my old bone XS. Very underrated ball but it was difficult to properly set up.
Jess