It might depend on the criteria you are judging the product on. Paper surface quality for fountain pen writing is basically on the bottom of my list. Durability of construction is #1 as they ride in my work and non-work pants as EDC items and are used in all sorts of weather (I am outdoors a lot). Next on the list is useful and well thought out, my current notebook has graph and lined pages, with about 5% of the pages in back being micro perfed and a pocket on the back cover. Having used both FN and Moleskin, my experience is Moleskin is a much better product. I appreciate the pointers from you and haineux to other products which I will check out.
Edit: Of the 3 manufacturers you mentioned, the Leuchtturm1917 Jottbook looks like the closest to the form and function of the notebooks under discussion. Hopefully I can find some around where I live to try out.