I just got my shipment of journals and my 2021 year planner from Lett's of London. As an avid journal writer, I want to have the best products to write in. I started using Lett's journals and planners last year and they're the best quality that I've found. I used to use Moleskine's but those are made in China now and they're quality is not as good. Lett's is proudly made in Great Britain and the quality is unmatched. Lett's is from 1796 and I love the history of their company.
I wish they would make sketchbooks also, maybe one day they will. Their journals are fountain pen friendly and the pages are numbered; I use a fountain pen to write and there is absolutely zero bleed through. There's also a blank index in the front so you can keep your journal entries organized. Go check them out if you're looking for journals, diaries, and all sorts of planners: