I have a bunch of playable or medium value cards that I want access to but would be way unnecessary store in binders, and have been looking at long card storage boxes/cases. I've mostly used those cardboard BCW boxes for bulk storage but I'm wondering if anyone has a recommendation or newer product here for a more "premium" one?

So far it just seems to be Ultimate Guard's "xenoskin" series (like the Arkhive and Superhive, etc.) and then various one-off products from other companies, like Card Guardian, that don't hold enough or are more designed to hold a few deck boxes.

I'd love a leatherette version of something, similar to Ultra Pro's Premium Pro-Binders, but they don't seem to exist! Bundle boxes are also pretty nice but it'd be great to have something more premium. Does anyone use anything they really like?