A more modern textbook on Axiomatic Set Theory, at the same level of rigor as Suppes? I'm currently using Suppes textbook to learn axiomatic set theory. Is there a more modern textbook that is just as well-written? I'm thinking of a textbook that still has a treatment of urelements (for example), but is modern enough that the empty set isn't denoted by 0. Thanks!

My personal preference is Set Theory: An Introduction To Independence Proofs by K.Kunen. Although it does not cover ur-elements. It's almost entirely on ZF and ZFC. And I get lost in the details in the def'n of Godel's constructable class L. For an easy and useful def'n of L, I suggest the essay in the book Lectures In Set Theory (various authors: edited by Morley).
