I can't speak on DI, but I will say that out of all of my games, WOZ has problems when it ISN'T played often. If you let it sit too long, the monkey mech seems to "harden" up and other random issues seem to flair up. If I play it every few days, the problems just don't seem to appear. I know this holds true for most pinball machines, but inactivity seems to hit WOZ a bit harder.