How many Leica, Swarovski, Zeiss, owners could be gathered giving an appraisal on their own fave model, a real critique of the performance of the Alphas in all their guises because most are Brand loyal, i float between 2, what would it prove, only thousands love their Alphas, getting someone to say they help me in their profession, doesn't cut it, if you're a carpenter, you would't use a blunt saw or a Glass hammer....
What makes you think that binocular owners are brand loyal? I've only rarely encountered that. One of the great joys of binoculars as compared to spotting scopes or cameras is that they stand alone and so brand loyalty is not "enforced" with proprietary lens mounts. Brand loyalty in bins makes no sense, so one is free to choose the best tool for the job according to one's tastes. My favorite set: Leica 8x20 Ultravid BL, Zeiss 8x32 FL, Swarovski 8.5x42 SV EL nonFP, and Pentax 6.5x21 Papilio II. If I were going to add another it would be Canon 10x42 IS.
On another topic, looking at that list of my favorite bins, I am reminded of a point that others have made in various ways already in this long thread, which is that you won't find many alpha owners who will dismiss the advantages such bins provide, even though most of us will agree that those advantages are very small, because IF WE DIDN'T VALUE THOSE SMALL GAINS we wouldn't have purchased the alphas in the first place, and (for those of us to whom this applies) we certainly wouldn't have upgraded from previous alphas. To illustrate, my current favorite set is listed below, along with my previous (often much older) bins that they replaced. How much better is the current set? Not much, but I really appreciate the small advantages in specs and usability that they provide because I regularly push my bins up against the limits of those specs and features. If I didn't make regular use of my bins to the limits of their abilities (e.g. close focus), I wouldn't regard those small differences as significant and I might stick with my old alphas or use new choices like the Tract and Maven bins which would be suitable for my, in that case, less demanding uses. Some might argue that instead of using the word "less" I should use the word "different". I say less because I feel there are many functional equivalents among second tier and old alphas. Some new alphas are functionally equivalent to the particular models I own, but no old alphas or non-alphas offer the same set of specs.
Leica 8x20 Ultravid BL--replaces B&L 7x26 Custom
Zeiss 8x32 FL--replaces Leica 8x32 BA for birds and replaces B&L 8x42 Elite (waterproof) for butterflies
Swarovski 8.5x42 SV EL nonFP--replaces Swarovski 8.5x42 EL and Leica 8x42 Ultravid and Zeiss 7x42 BGATP
Pentax 6.5x21 Papilio II--replaces Pentax 6.5x21 Papilio (and before that there was nothing comparable that I owned).
--AP