I bought all the Jim Lee X-Men #1's back in the day. If I remember right, you had to get the regular edition covers in order to get the gatefold edition. That's one book I don't ever regret getting "suckered" on during the Speculator craze. I enjoyed those first 3 issues very much.
I've got multiple copies of Incredible Hulk #393 & 400; mainly due to lot purchases on eBay.
Come to think of it, I've got multiple copies of hundreds of Hulk books -- from the Len Wein run thru the first half of the Peter David run. (Again, comic lots from eBay...I'm in a very long process of replacing my battered copies with fine to near-mint copies.)