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Message: <blockquote data-quote="Kevin Conville" data-source="post: 1354143" data-attributes="member: 63161">When considering compact (mini) binos, it's evident that one must place a very high value on ultimate compactness to want to go down the premium roof prism road. A good reverse porro prism 8x25 will play on the same field (optically) with the previous mentioned roofs and will reward the user with much better ergonomics and a larger exit pupil at a fraction of the price.In my case, Nikon ProStaffs have a larger diameter eyecup with a broader surface where it contacts your eye socket and this makes for a much more comfortable bin to use. It has a larger focus knob that's easier also. The shape of the ProStaffs (and other rev. porros) are a joy to hold both in your hand and to your face as compared to mini roofs.I paid $118. for the ProStaffs. That's well less than 1/5 of what the Leica Ultravids cost in the US. For a bin that's primarily intended for keeping in the glove box, pack, purse, or other place as a "you never know" kind of optic, I know what makes sense to me.FWIW, I've had three mini roofs including Leitz Trinovids that I used for 18 years. Though in their day they were probably the best available, the ProStaffs are superior in every way, except when folded for storage. I mention this as the layout is pretty much the same as current mini Leicas, though optically inferior.</blockquote>