As far as the view thru this glass, it is on a par with anything out there. I also have 2 Zeiss FL's, all 3 Nikon SE's, a big Canon IS and a couple of Bushnell Customs, and the 820 (mine isn't even the ED version) gives every bit as satisfying an image as any of the megabuck binos. There is some grousing about size & wt, but that actually makes the bino easier to hold (and hold still). It's physically no bigger than the 10x42SE (weighs about 5oz more, but no biggie).
Swift advertised er at 17mm....it's a theoretical figure, based on measurements of the various focal lengths of the optics complements, not a true usable measurement. 12-13 mm is more like it.....not quite enuf for eyeglass use to see the full 8.2* possible (you can get maybe 7-7.5 if you have close-fitting specs). And the popup (actually very stiff pullup) eyecups.....no good. Now mine is almost 8yrs old, they may have made running changes and improved them. Mine has very snug diopter setting....no problem, and I did notice the anodizing on the hinges start to peel off at about 4 yrs. On my example, they are made of aluminum, not plastic. I just peeled off the rest of it and applied some AluminumBlack with a Q-tip and it looks fine.
In short, I've owned over 75 binos since I got my first good one for my 13th birthday.....some really good, others complete toads. I've kept the best, the Audubon included....it's in very exclusive company.
q