I haven't even opened my Iron Man Omnibus yet! I don't like the paper TOO thin (Like Dr Strange Vol 1) but I think the ASM (Lee/Ditko) book would have been better with thinner paper. The paper on that book is very thick, and with the page count makes it HUGE! It also makes the spine break. I just read the first Tomb of Dracula Omnibus and the spine was perfect afterwards