some people will defend, defend, defend .... a brand they covet.
Very true, and it sometimes gets a bit tribal. A few hunting sites I also frequent appear to have developed a huge “single brand” fan base which virtually swallows all objective discussion of brand comparison. If someone criticizes a feature or “good heavens,” prefers another brand, they are immediately dismissed as uninformed or biased.
I’ve own(ed) and thoroughly enjoy(ed) many wonderful binoculars from Leica, Zeiss, Swarovski, Nikon, etc, and still enjoy trying out other brands and new models. Learned a lot along the journey and today am much less susceptible to advertising, endorsements, hype, and flat-out misinformation. Even today, when considering buying a binocular I prefer to direct-compare, if possible, before buying.
To that end, I own 2x SLCs and have been interested in the SW EL 42mm since they first came out. But from the beginning noticed this strange phenomenon while panning with that particular model, which makes me very uncomfortable. I later learned it was commonly called “rolling ball effect.” I’ve gone back and reassessed the ELs a number of times and the effect is still there. However, many SW fans dismiss it and try to tell those affected that we are either exaggerating, hating on SW, or in a 1:1,000,000 group that sees it. Personally, I’m not very susceptible to seasickness, but would never presume to tell someone leaning over a ship-rail that it was all in their head.