Cannot comment on Moleskine as I've never used one. I am loving TWSBI notebooks [1]: the paper is thick, and does not feather or bleed with fountain pen ink. There is very little ghosting which makes it possible to use both sides of paper. Here [2] is a review I found helpful.

[1] http://www.twsbi.com/collections/notebooks

[2] https://www.youtube.com/watch?v=6RJkNfiP_ys