It strikes me that you have only a few options, all of them 8x30/32:
- one of the newer ultra compact 8x30 options like the Opticron Traveler or Nikon MHG which are ~450g
- suck up a bit of extra weight (~530) and get an Ultravid 8x32
There really aren’t many other compact and super light options that are both “only a bit bulkier/heavier” than the 8x25 Zeiss, while also providing excellent optics and view + handling more like a regular sized binocular. I cannot think of ANY viable alternatives between the ~300g 8x25 class and the ~450g 8x30’s.
My thoughts are similar. Initially I wanted as compact as possible but after a brief run with the Ultravid 8x20 this wasn't going to be suitable. Considered the Swarovski 8x25 but the dual hinge and so on are cumbersome by comparison to the Zeiss.
Fortunately the Zeiss handled and viewed above expectations, otherwise I would have given up and perhaps delved into the 30 realm, which in my opinion is not in the true compact class and overall I'd almost as likely stick to a 32. I do think that those seeking as compact as possible but can't accommodate a "pocket", a 30 may well be a good compromise. Then there's the likes of the Ultravid 32.
I generally carry a daypack when using binoculars 32 and up but with the little Zeiss accompanied by the replacement case I can go bag free and literally keep them in my pocket as required, keeping in mind that I often wear shorts and pants with side cargo pockets but the fit inside is perfectly reasonable.
Subsequently I'm carrying binoculars more frequently than I otherwise would, I'm seeing more birds and views in general.