I'd have to say I agree with HH on this one. I recently bought a new Doug Stone map for Rheola that I saw going cheap. Back in the day it was probably a half decent map, but I found it strange that a small triangle of land which contains Gilmour Gully, was not even highlighted as Crown land on it. By contrast John Tully's map showed its status clearly, with many more historical gold nuggets listed with location, weight and depth.
Having said that, I now rely on Geovic mainly (when it's working), and use Tulley's maps to check track type and where to park the car.