Follow-up on the Fellow Opus grinder now I've had it a couple of weeks:
It's quiet and the grind seems consistent. The de-ionizer works fabulously.
However I'm not convinced it's going as fine as expected (need a coffee friend to come help me dial in my doses) and, most significantly, I lose up to 3g out of a 19g dose inside it unless I thwack it on the head when it finishes.
// @coffeegeek