You sound like a man who needs to try a 42mm EDG binocular Maybe you already have. I think you'd love them. I was very impressed with the improvements in the outer covering and overall design and build of the EDG series compared to their prior HG/LX/Premier series of binos.Everyone has their expectations and claims, but I am completely satisfied with Monarch HG 8x30 construction. I really like its classic look, but also the optics and mechanics! I even think that, with this superb Monarch HG, Nikon occupies a unique place in the binoculars market, shared only with Leica binoculars. Instead of looking like many other binoculars, it has a luxurious finish and we can feel this in our hands. From my point of view, the concept of this binocular is welcome in the world of common binoculars with boring utilitarian design. This Monarch HG, it's like a classic Porsche. Monarch HG is a very successful design object besides the fact that it is also a good optical instrument!
The monarch:
To me the current EDG have the most luxurious feel of any bino on the market. There is a bit of weight penalty to be paid over the Monarch HG however. And nothing that compares to the compact size of those 8x30's. And I think you have 10x42 SF's, they're nice too, so not much reason to add the 10x42 EDG.