Loved the early Lee Kirby issues.

Cyclops, Prof. X, and Angel were always my favorites of the original team.

Loved the original back ups featuring the individual X-Men before they joined the team.

Loved the Thomas/Adams (and Heck/Palmer) issues of the later X-men.

Loved all the various Angel costumes (My least favorite though, was the suspenders version).

Loved the best of the Quirky characters added as time went along...Mimic, Banshee, etc.

Enjoyed first reading the Thomas/Roth issues as reprints, even though I never thought Roth was truly suited for super-hero works.