I was considering swapping my NL 10x42 for the NL 10x32 for weight and bulk reasons. Recently I had the chance to compare them both extensively. In terms of image quality (sharpness, color, fov) I found the 10x32 nearly identical to the 10x42. I was surprised of the brightness too, in cloudy daylight conditions I saw a small difference but less than I would have expected when going from 42 to 32. But the deal breaker for me was eye placement and ease of view. With the 32, while scanning the sky, I found it more difficult to maintain a clear image without ‘blackouts’. Even with the head rest that didn’t improve much. I found the 10x42 more forgiving for eye placement errors, which results in a nicer, easier view, and that is worth more to me than a small advantage in portability.