I've had a better experience with the spaceball in my S60 than the base M66 shifter in my 850R. The shift cables bind with every M66 I've closely investigated and I had to do a lot of work on my base M66 shifter to get it to mask that problem as well as the spaceball does. That said, I know I am one of extremely few people in the states with a base P2 M66 shifter in anything and mine is the only one I have ever experienced, so I am not sure if there was just something wrong with mine or if this is normal.Me too.
How is the feeling of spaceball shifter when compared to the regular one? Any noticable difference in responsiveness?