Bit the bullet as well...
Now though, DPI notwithstanding, the thing is nowhere near being able to provide smooth and precise movement.
When doing large swipes, it's obviously not an issue, but I can't get advertised "pixel precision" (well, dunno if it's really advertised, but I read that somewhere), as small movements are choppy (the bearings are clean).
I guess it's the famous case that involves the need of waiting for said bearings to "break in", though I can't insist enough on how not-precise it is...
Also, the scrollwheel is fine when I scroll "up", but it's a pain when it goes "down": now and then it feels like there's some stuff preventing the wheel to roll, to the point where it doesn't register the scroll.
And once the blocking stuff is passed, it rolls and scrolls again (until a few rounds later, of course).
I'll most likely contact CST about that, after checking more thoroughly at the innards.