I have the Sunlu one, the OG one without the fan. It seems to work fine. It is silent… because it has no fan. I run it with its lid propped slightly open, about 1/8". Otherwise I figure any moisture cooked out doesn’t really have anywhere to go.

I jiggered it to feed directly into my printer, which involved drilling a hole in the lid and threading in one of those press-to-unlock tube fittings and some Capricorn tubing. It wasn’t too difficult, not least of which because my current Qidi printer would normally accept filament feed via Capricorn tubing anyway, but from its dumb rear-mounted spool holder thingy.

I’m away now, so I can’t find sources. I just modified a good sealing container with 1.25" dowel across the middle that holds 4 rolls high in the box. Cut holes and printed fittings for the pneumatic tube fittings. Put silica litter in the bottom. Now I have 4 rolls in a dry box, cheap, that each have their own port at the top of my printer. I’d recommend, though, trying to put each roll on its own roller, as that’s kind of a pain.

I found this chart and am leaning toward the eibos more based on this:

https://www.mytechfun.com/filament-dryers

I use this: https://www.printables.com/model/791177-cereal-box-style-dry-box-spool-holder-no-hole-cutt Works great, cheap and it’s my design.

It doesn’t fit all the criteria you mentioned, but if you don’t print that much and wanna try a dryer before buying anything, you can make a cardboard foil tent for your printer bed and use that https://m.youtube.com/watch?v=MflrcqNozqs