Alan
<Thoughtful advice appreciated, but snipped>
You are getting close to recognition that there is getting to be very little difference when stepping up the ladder. The Sightron is a pretty decent binocular, and while there are differences to be found stepping up, those differences, in my view, are pretty small.
This is familiar is many arenas where performance vs. price gets asymptotic as you move to the higher end. My general philosophy is that for technology and things that are changing rapidly I like to purchase mid level on the linear part of the performance curve well before it bends over and goes flatter, because today's high-end is rather quickly tomorrow's medium quality.
On the other hand, for things that are more durable where technology is not changing quickly, I would rather buy a little higher quality and get up past the initial linear region to where the curve bends over and starts approaching the asymptote. If I am going to use something for a long time, I would like to really be pleased with it over that time.
From my limited experience so far with roof prism binoculars and what I read here, it appears that what I called the linear part of the curve is in the $150-$400 range, the level where the curve bends over and starts approaching the "alpha limit" is somewhere around $1K (I know there are dissenting opinions well above and below this figure). There are always going to be outliers that have particularly good (or bad) performance in their price range. However, once you get up on that upper part of the performance curve, you do not have to be very much of an outlier to be a potential game changer--hence the title of this thread
Obviously, many of these judgements are subjective, and I do not present myself as an expert on the current state of the art in binoculars.
BTW, and back to the thread topic, the B2 9x45, the past two nights demonstrate that this is a terrific astronomical binocular as well, but sadly they will be going back to Maven. I've decided that they are larger and heavier than I would like for regular daytime use, and they won't replace the combination of my 7x50 Fujinon + 15x45 Canon IS for night use. I believe my next try is the B3 in either 8x30 or 6x30. I will consider that while I am out of town, and perhaps give the guys at Maven a call to discuss it. I briefly considered the 7x45 B2 because I am curious, but since the issue is size and weight more than magnification, I think that is the wrong way to go for me right now. The B1 is interesting, but it too is no light weight at 29 oz, and I would rather start with something smaller unless and until I decide I really need the additional aperture.
BTW, the B2 is my first Wow! binocular experience in almost 30 years. That ancient Wow! was the first view through my Fujinon 7x50.
Alan