I'd recommend the Hario Skerton / skelton / skeleton (some confusion about the name, around the net).
Admittedly a big criterion for me was its looks - I'm not a fan of the "little wooden box with drawer" style hand grinders. So I wanted a Hario, and I'd heard good things about the burrs.
There's a bit of float on the burrs, less for finer grinds than for coarser ones. I think a sleeve round the spindle could cut this down, but I've yet to fit one. (Only brought the Hario back from hong kong this January).
To be fair, there's nothing I can say that hasn't been said, better, at:
http://blog.jeremey.com/jeremeys_weblog ... inder.html
(His review has great pictures, too)