[adamquek]

I prefer A5 notebooks that are bound. Precisely because they are so portable, I don't ever want a binder that give additional and unnecessary girth. Binder for A5 is also not very conducive for writing, unlike notebooks.

For loose sheets, I'd go with B5, 26 holes paper and binder. They are two-third the size of letter, which is a good compromise to have some empty space for writing and drawing, while not that small (like A5) that are a hassle to bind.

[eternityforest]

I can't say I personally like the girth of binders either. Perhaps some new future tech will make them thinner?

But the ability to swap out pages for correction or archiving, swapping in printed pages, and the ability to use accessories like card sleeves makes the binders win out for me, other than maybe if I was going to start paper journalling again.