I hated the '90s Superman comics. That “Triangle Numbering” system they used where each different title followed an issue of a different title was terrible. And you could always tell when a writer had to drop the story he cared about in favor of writing Part 3 of 7 of some other writer’s story. I don’t like that stuff.
Also, the haircuts were horrible. Superman should not, under any circumstances, sport a mullet. And what the heck was up with Superboy’s bowl-buzzcut?