Add Clairefontaine to the vendor list, as their notebooks have served me well for a decade or more. Good paper feel, little or no ink bleed. I use their engineering versions to get the gridded paper which I find more useful that ruled paper. They have all sorts of sizes, but I use what is probably A4 as it’s roughly the size of my laptop and fits in the bag.
Add Clairefontaine to the vendor list, as their notebooks have served me well for a decade or more. Good paper feel, little or no ink bleed. I use their engineering versions to get the gridded paper which I find more useful that ruled paper. They have all sorts of sizes, but I use what is probably A4 as it’s roughly the size of my laptop and fits in the bag.