Tricky!
The paper used for the child& o statements are up there. By far the best paper that’s come through the post.
I’m also really fond of the paper apple use for their letters. The paper itself isn’t anything special, it’s nice, but the corners are rounded, concentric, adhering to the same guidelines they follow in their hardware design. It’s lovely. Slightly off topic, but I believe Apple Card follows their same ratio too, and are ever so slightly rounder than conventional cards. Their chip was custom designed in the same way too.
My favourite paper for using depends on the context. I always buy my wrapping paper from The White Company. It’s just fancy Kraft paper, Hugh quality, thick, and minimalist. This is the one I used for Christmas last year: https://www.thewhitecompany.com/uk/Christmas-Green-Kraft-Wrapping-Paper--5m/p/WRHMF
For printing, it depends what I’m printing. For business cards, the simple answer is moo > vista print by a long mile. If your cards are from vista print I can usually tell and I’ll judge you negatively for it! The longer answer is I’m very particular about my card specs which I’ll get into at the end of my post!
For photos, photo books, or anything related to printing photos, there’s only one good choice: Motif
Katie Leamon make some of the nicest greeting cards. I use them for all birthday cards, which also happen to be perfectly sized for a child&Co cheque I imagine the rest of their paper and stationary is up to the same standard too, so can’t go much wrong there.
For labels/stickers, Avery is the best option for consumers. But aren’t going to be as good as something a little more custom made. But I have custom designed letter seals on order from those. Just a round transparent sticker with my initialised signature. Use them to seal up my envelopes, because who licks? Gross.
For printing regular letters and general I’ll discuss my favourite specs here. I generally like my paper uncoated (I believe all of my child and co statements were printed on uncoated paper until my most recent one which had a matte coating and felt like standard cheap printer paper). Uncoated paper folds nicer. I like business cards that are uncoated too. I like the texture and feel. I’m not too fussy with the GSM, just whatever is suited for the need, but I do tend to prefer thicker than most. Think 118+ for regular printing and business cards gotta be 600. I’m a sucker for things like letterpressing too. I’m all about texture. I also think print and ink quality counts for a lot too. Especially if you’re going to use vegan ink. That requires a lot of extra care to do, because it smudges very easily, even long after it’s dried.