Argus / Soviet / other turret viewfinders?

Recently rounded out a set of 35mm/50mm/100mm LTM lenses to shoot with a couple old rangefinder (fed 2, leica iii) bodies i have kicking around and have been thinking about picking up a turret viewfinder for my rig.

I’m aware of two options and curious about folks general opinions of them, but also specifically - what do the framelines on these look like? Are they just black frames or are there albada-style lines of some kind?

Are there other turret style finders i should keep my eyes open for?

The kmz soviet finder


The (german-made) argus turret finder

No frame lines...a movable mask crops what is visible in the viewfinder.

Why not the actual leica turret vf (whatever it’s called)? They can be found pretty cheap because nobody likes them, I guess!

I've just had my Zeiss Ikon pre-war Universal finder 436/70 CLA'd by Oleg Khaliavin.

It's a beautiful tool especially when you use 85 and 135 mm lenses , compared to the Leitz Universal finder which is usable for wide angles and standard lenses but less handy for telephoto lenses.