My favorite comic was X-Men and Uncanny X-Men, although I eventually had to hide them because my mom would make me cut the big boobed women out of the panels. :'(
I read comics for most of my young life, but I didn't start actually buying them until the Onslaught arc, which was awesome to me at the time. It was a pretty ingenious gateway arc for newcomers considering you had to buy various comic books just to keep up with the story line. So I started getting Cable stuff, Avengers, Spiderman, etc, but once the Onslaught thing was over I only bought X-Men and Uncanny X-Men stuff.
I liked X-Men because it reminded me of myself. I was pretty quiet as a kid, didn't really fit in well with everyone, so the idea of people having mutant powers always captivated me, even later in life with Harry Potter. My favorite was (obviously) Wolverine; hell if someone asked me who my favorite super hero is today, I'd still say Wolverine. In the middle/late 90s comics he was definitely the outcast of the group, constantly either quitting the team or going on Rambo missions by himself.
I stopped reading comics shortly after the first X-Men movie came out. While I thought the movie was ok, I hated the way it effected the comic. Obviously a lot of new people were exposed to the comic through the film, and it seemed like Marvel took that as an excuse to really dumb down the quality of the prose/stuff in general. This was all prefaced by the return of Chris Claremont. So now I had to read villians explaining what they were going to do....before they did it. And each X-Men constantly telling me what his/her powers were ugh.
After a few of those early Claremont issues in 2000 I quit