I'm wondering what people are doing to get so much bleed-through. My larges hold up to most of the inks I've used, mostly through my Lamy Safari F and occasionally other pens. I can write on the backs of most pages. Yeah, it could be better, but it's rarely an issue. The Master has better paper than that.
I don't mind show through and actually prefer a hint of it, but my Large 1917 bled like crazy with a Lamy M with Lamy Blue-Black. Now I have a million different inks and different pens to try on it, so I should give it another chance. When I first started using it it reminded me of slightly better Moleskine paper (again, in the Large) so I wasn't too impressed. The Large has 80g paper and the Master has 100g.