The Apple BT mouse was ok if you don't mind the one button and no scroll wheel thing. It's not the same as a wired mouse, but it's doable.
I've tried two macmice BT from DVForge and neither of them tracked well. Also, the shell is loose and moves around alot. Feels cheap (but isn't cheap).
I've tried a mini BT mouse from Radtek. That worked pretty well tracking wise. However, on the second day the left button started getting stuck and would need to be pried loose often.
I've also tried the bluetooth mouse that came with my dad's acer ferrari whatever that was. It didn't track well either.
Pretty much I've had bad experiences with all my bluetooth mice (and no great experiences with anything bluetooth for that matter). From the ones I've tried, if I had to recommend one, I'd say the Radtek on the assumption that my button problem was a fluke.
However, I've heard good things about the Logitech bluetooth mouse. If I was going to give bluetooth mice a shot again, that's what I'd get.