I used to do a fair amount of woodchuck hunting with a 222 Rem chambered rifle. That translated to a lot of "glass time" checking for woodchuck head peaking out of their holes . I eventually got my first "good" pair of binocs.They are small enough to carry all day, but big enough to be comfortable and steady. I got a pair of porro prism 8x30 Dr Optic binocs made in the early 1990's with their multi-coated glass. I think they were $150 20+ years ago in "as new" condition.
Researching binocs years ago I remember coming across statements from "optic experts" that you can get better optical performance at lower cost with porro prism (zig-zag layout) binocs, compared to a roof prism design ("straight tube"). This is due to the roof prism lens design which creates phase shift and reflective issues of mating lenses. These design issue required higher quality builds (+++$) to minimize lens surface mating issues(which drives up cost). So at what price point do you get equal optical performance from porro vs roof prism designs? I'm not a man of means, and only have that one pair of binocs, so I can't answer that. My guess is that a 300-400$ par of porro prism binocs would be close to $1000 roof prism binocs, but that's just a guess.
In short, you get more optical quality for the $ with "very good" porro prisms compared to similar optical quality of roof prism binocs (which needs more $ to make it work as well or better than porro /zig zag binocs). Hence my decision to get the 8x30 Dr Optic porro prism binocs.
The 8x30 porro prism binocs are a small package, but big on optical performance for that price point.
No eye stain after a full day of glassing chuck fields. Very crisp image. Resolution (ability to see detail from quality lens material, and manufacturing) is where it's at, and what you pay for.
8x30 porro binocs are not "compact", but certainly small enough for my needs in rifle hunting and archery needs. I'd like to try a pair of Nikon 8x30 EII porro prism binocs-just to "see" what they offer. Maybe someday.