NV 8x42---short review, bullet style
++Build quality and accessories: very good; among others, I like the rainguard, which I rarely do; also a very good system for the objective lens caps.
--Ergos/handling: hard to find the best grip, the open bridge/double hinge is somewhat useless--despite moving the focus knob higher than usual, there is not enough space for 4 or even 3 fingers. Focus knob unusually close to the eyes, I tried to focus a few times by trying to turn the upper hinge instead of the knob! Also rather heavy on the neck--- and it feels a bit cold in the hand, especially as there is no rubber armor between the tubes.
--Focus knob a bit on the stiff side on my sample, also seems to have a tiny play when you change directions.
--Blackouts (without glasses): slight but relatively frequent, despite very good eyecups with multiple stops-- they seem a bit too short (the ER=18mm, and the eyecups extend about 14mm); Use with glasses should be fine (but I need to twist up the eyecups till the 2nd stop).
++/--Apparent 3D: quite visible. My explanation: the upper part of the FoV has a small negative curvature (so that the background is in focus), whereas the lower part has a lot of positive curvature (so that the foreground is in focus)--this yields 3D impression (the -- is for the excessive curvature in the lower part).
--Pincushion: acceptable.
--CA: rather conspicuous off axis: a crow, with a whitish sky as a background, looked almost like a green parakeet when moved off center!
++Contrast: very good, likely due to a very good light transmission curve and very good baffling. As remarked by others objects do stand out well separated from the background and the view is vivid/vibrant. (I briefly watched a soccer game in San Francisco and I could not stop looking at the yellow and red jerseys... ).
++Glare control: very good, likely the best--and this despite the fact that looking at the lower part of the FoV one can see 2 bright reflections from 6 to 5 (right tube) and 6 to 7 (left tube), likely from a lens ring or the prism edges--like in the SF8x42!
Peter.