If it's crap ... We'll tell you
Sorry I don't buy that If you like New52 Sups you won't get pre-52 Sups, I mean take me for example, I grew up reading Pre-Crisis Superman stories as well as post crisis stories and I'm enjoying New 52 Action Comics by Morrison and I know for a fact that I'm not the only longtime Superman fan who does like it.
That being said I'm not fond of the character's portrayle in the New 52 Justice League series and the Superman title needs more focus
Superman: Braniac by Geoff Johns and Gary Frank.
Superman: Secret Origin also has some nice moments.
What's So Funny About Truth, Justice & the American Way?
Both have been turned in to DCAU movies but the books are much better
All Star Superman
Superman: Up Up and Away
Superman and the Legion of Superheroes
Death and Return of Superman arc
What's So Funny About Truth, Justice and The American Way
Man Of Steel mini-series
Bronze Age Superman stories
90's Superman stories by Louis Simson and Jon Bogdanove
Roger Stern's Superman stories
Morrison's run on Action Comics
Chris Roberson's run on Grounded
Superman: Reign of Doomsday (not a bad way to finish up the Post Crisis Superman era)
Superman: Black Ring (One of the best Lex Luthor stories ever)
Superman: Earth One (would've made a better movie than Superman Returns)
I felt guilty for missing some Silver Age goodness:
The Last Days Of Superman
The Showdown Between Luthor and Superman!
Superman Under The Red Son
The Man Who Destroyed Krypton
The Strange Death Of Superboy
The Super Duel In Space (the debut of Brainiac)
The Last Days of Superman
And a lost story from the Golden Age that is being restored by a Superman fansite:
The K-Metal from Krypton (a story about a mysterious metal that was a precursor to Kryptonite)
Just like to thank all of you for your suggestions. I'd like to let you know that the first, of hopefully many, stories i'm reading is Superman Brainiac. Great suggestion. You've helped a new Superman fan.