Thinner paper for me. I don't know how some people manhandle their Omni, but I never had a problem flipping through the Michilinie/Layton/Romita Jr. Iron Man Omni.

The heavier-stocked earlier Omni I own almost discourages me from casually looking at them, as they are absurdly cumbersome. Plus the extra weight of the paper could actually increase the damage if dropped. Remember when Iron Man threw a bunch of giant rolls of printer's paper and squashed some Dreadnoughts flat (in the IM Omni)? Same principle.

I guess someone could do a test by dropping an old Omni and a new Omni out a 5-story window. Any takers?