Can any one tell me the differences between the various ranges of Steiner binoculars?
In particular the Commanders, Observers and Navigators?
What are the feature differences between these ranges?
I've not been able to find specific info on the Steiner site e.g. if they have different lenses, coatings etc.

I'd be very interested if someone knows, especially about the 7x50 compass models.

Alternatively does any one know of a good forum/site with info on binos?
The first 5 or so pages of google were all shops no user info.