I'm really happy that they give 12-13 issues in the Fantastic Four Masterworks. It's a shame they didn't do that with some of the Spider-Man releases which usually had 10-11 issues per volume. The fact is 13 volumes of Fantastic Four have yielded 141 issues whereas 13 volumes of Spidey have reached 131 issues. Yes; I know Spidey had a couple of super-sized stories in the Spectacular Spider-Man magazine but I still think it falls short of what the Fantastic Four volumes have given us.