I've found out most indies are just the same ol' stories, but with generic superheroes, if anything they try to be edgier and more progressive than the big two.
I'll stick with DC, Rebirth is been fantastic so far.
As for the non-big 2, some of them are salvageable, like Jupiter's Legacy and some other Millar stuff, but for superhero stuff, indies aren't really better than the big 2, they're actually worse since they're the same but with generic bootleg superheroes
For other genres, yeah, there's more variety in indies.