I own hundreds of journals and have very high standards for them. The Apica C.D. Hard Cover Premium is the best I’ve found. The paper is the best, and the binding is great. I fold my journals over entirely as I write, and many don’t take it well, and crack. This journal doesn’t mind at all.
Well designed and well made. If I had to limit myself to one model of journal for the rest of my life, this would be it. (Their softcovers have the same paper, but not the same sturdy uncrackable binding.)