Made in Japan, so it's probably good stuff, I'm not experienced enough to really compare taste vs the Timemore brand papers that came with the Timemore Crystal Eye dripper, but both seem to work nicely. I think for that brewer (the smaller version, but also worked on the larger 2-4 cup version) these fit pretty good but not as perfect as the Timemore ones, these might be just a tiny bit too small, leaving one part that doesn't contact the brewer. Not sure if that's a big deal though.
Update: Dropped 1 star after doing a comparison, dropped another star for possible inconsistencies
I've been enjoying these on their own but when compared with a bunch of other paper filters I found these seemed to lose out more often than others. You can get good results but better results with other filters. People complain these stall, I don't think I had too many issues with that or I ground coarse enough and compensated for it (less pours / agitation). My fav filters for Light roast coffee in V60 is Kinto and maybe also the Oragami (by Cafec) filters both of which happen to have cotton fiber blends.
I've also heard there's different versions of these which are very different filters. There's the Euro versions which have an odd / stronger filtery taste and may flow slower and stall more. The Tabbed ones in a bag may be different from the Tabbed in a box.... it's confusing and inconsistent so that lost a star.
Although these ones I tested steeping the filter on its own and the filter taste was not bad, it's a pleasant woody sweet taste, I think they actually did better than the Flat bottom Kalita wave filters did which weren't 'bad' tasting either but had a stronger taste. With normal coffee use though I think even without rinsing the filters you won't taste the paper. With some coffees you might think you're tasting a papery note but it's more the coffee than the filter, I've had that when cupping a coffee (no paper at all)!
