Many people have compiled lists of what are the best superhero comics ever. Not just in single issues, but in terms of high periods or creative bursts, like for instance, the Schwartz stable of Superman writers in the 1970s (Maggin, Bates, and the artists Paul Kupperberg and Curt Swan) or the Lee/Kirby FANTASTIC FOUR.
It's time to step into an overcrowded field and say, "hey, me too!"
That said, here's my personal list of 20 Best Superhero comics ever. If it is an ongoing title, assume it is the period under the writer that is highlighted.
20. GREEN LANTERN/GREEN LANTERN CORPS (Steve Englehart)
19. Any of Jack Kirby's FOURTH WORLD comics, but most especially the clever, unpretentious MISTER MIRACLE
18. AVENGERS/DEFENDERS WAR (Steve Englehart)
17. TOM STRONG (Alan Moore)
16. Any Superman story after 1952 (or thereabouts) written by Jerry Siegel, especially "Return to Krypton" and the "Legion of Super-Villains."
15. DETECTIVE COMICS (Steve Englehart)
14. MIRACLEMAN (Alan Moore)
13. Any SUPERMAN or ACTION COMICS story written by Cary Bates or Elliot S! Maggin, with the exception of ACTION COMICS #502, with its ridiculous ending that destroyed the premise of the story.
12. "Whatever Happened to the Man of Tomorrow" (Alan Moore)
11. SUPERBOY AND THE LEGION OF SUPER-HEROES (Cary Bates)
10. MARVEL FAMILY (C.C. Beck)
9. LEGION OF SUPER-HEROES (Jim Shooter)
8. 1963 (Alan Moore)
7. "To Kill A Legend" and "The Autobiography of Bruce Wayne" (Alan Brennert)
6. ASTRO BOY (Osamu Tezuka)
5. SUPREME (Alan Moore)
4. AVENGERS (Kurt Busiek)
3. JUSTICE LEAGUE OF AMERICA (Gardner Fox)
2. AVENGERS "Celestial Madonna" Arc (Steve Englehart)
1. FANTASTIC FOUR #60-80 (Stan Lee)
To determine most of my rankings I looked at the following things that are necessary to a superhero comic and ranked them in order:
1)
Characterization. This is why there are so many stories here by Steve Englehart, as are the Luthor stories written by Elliot S! Maggin, as well as Kurt Busiek and Stan Lee.
2)
Real Emotions. This is why stories like ASTRO BOY, Alan Brennert's Batman stories, and "Whatever Happened to the Man of Tomorrow?" are here: because they make you cry. Because they suckerpunch you in the gut with very real, legitimate emotions that aren't trumped up.
3)
Trippy Concepts. That is to say, how often does the story WHAM! you with an incredible, neat idea? The better the story, the more often it should do this. The old arcade screen that says that "Winners Don't Do Drugs" should be amended to read "Winners Don't Do Drugs...unless they Write Superhero Comic Books." One can see now why SUPREME, 1963, Fox's JLA, and TOM STRONG make the list.
4)
Plausible Science. Superhero comics are an offshoot of science fiction. All philosophy aside, there's something about science that gives plausibility to a situation, and something about science that makes things more detailed, gives powers greater permutations, suggests weaknesses, and in general makes the world feel all around more real and detailed. For this reason the Gardner Fox JLA, ASTRO BOY, TOM STRONG, and MIRACLEMAN are on the list.
5)
Sense of Humor. How often does the comic give real belly laughs that come from the characters? This isn't as necessary as the others, but can save a concept from being terrible. Alan Moore's work, for instance, somewhere between 1985-1990 was absolutely, utterly unreadable because it only had glimmers of the usual Moore humor and charm (WATCHMEN is an example of a particularly terrible story by Alan Moore standards; a plodding, self-congratulatory dinosaur, it only has a few places where it is ironic, only occasionally is it funny, and only occasionally does it have has legitimate emotions besides existential angst, and it's vile, unlikeable characters utterly repulse me)
Most of the superhero comics on this list suggest themselves based on the criteria that I listed above.
Also, I limited the list to
SUPERHERO comics. Which means that KAMANDI, a personal favorite of mine, the Silver Age TOMMY TOMORROW, and Neil Gaiman's SANDMAN, as well as Roy Thomas's CONAN, great works every one, are off the list, unfortunately. Many independent comics also don't make the list. To which I say - tough tamales.

I liked ELFQUEST in High School. On a related note, I'd love to go back in time and beat myself up in High School. MAUS was emotionally manipulative, dishonest "emotional pornography," the comic book equivalent of Steven Spielberg's A.I., except instead of teddy bears and little robot boys that want Mommy, Spiegelman cloyingly goes for the greatest inhuman act in human history with all the subtlety of a sledgehammer to the gut. MAUS has only one thing going for it, which is it came out in that year where superhero comics wanted desperately to be taken seriously by anal, trendy jackasses that feel embarassed of their hobby and seek to justify their existence to girlfriends and landlords. In other words, coddling their neuroses and anxieties about adulthood by insisting comics be taken seriously. And why is it nobody can point to "adult" comics as great as the Father, Son, and Holy Spirit of DARK KNIGHT RETURNS, WATCHMEN and MAUS? Because 1986 came and went, that's why. These comics just happened to come out in the right place at the right time, and the window of relevance shut. Oh, and if you're doing a "comic that wants to be taken seriously," don't put funny animals as the main characters! Symbology my Aunt Banana - the real reason he used it is because Spiegelman's crude, clumsy art style just can't draw realistic humans. Why didn't Spiegelman go all out and make MAUS about the Donald Duck Holocaust?