I've handled a 4K and I must say the vinyl covering, the painted numbers, the cheesy 'western' printed name on the front... just didn't do it for me 🙂 maybe it's because I lucked out and managed to get a Zorki 4 with the bevelled RF windows, engraved everything, including the cyrillic name 😀 and the vulcanite is gooooorgeous
on a side note about meters, i recently received a Gossen Sixon 'Color Finder' (you must have seen these on the bay, there's tons of them) free along with my Gossen Sixon 2 CdS. Imagine my surprise when the wee plasticky selenium Color Finder from 1952, worked perfectly! Both match the readings from my DSLR! They shall go with my FSUs nicely 🙂