I have the Stan Lee/Steve Ditko Doctor Strange Omnibus. From what I understand most of them are thicker than the one I have (this was a shorter run being collected) but it is a gorgeous, sturdy, well put together book. The Marvel Omnibus collections are the real deal.
And as a ponus, my Strange one has a great original piece of Alex Ross art on the cover, rather than a plagiarized rendition of its titular character cobbled together from other work.