Old-fashioned, fun-to-follow superhero comics?
Good luck. :/
All-Star Superman more or less fits that bill. As do the original Ellis/Millar runs on The Authority. Planetary; Nextwave; Morrison's JLA; Mark Millar's individual issues on Superman Adventures from the 90s (awesome if you can dig them out); old school Lee/Romita Spider-Man; Adam Hughes' Gen 13: Ordinary Heroes (the tpb has a crappy Alan Davis comic but does contain Hughes' "Wham!" back-up story); Adam Warren's Empowered, Gen 13: Grunge The Movie, and Gen 13: Magical Drama Queen Roxy; The Ultimates; Joss Whedon's run on Astonishing X-Men; Scott McCloud's Zot!; the first twenty or so issues of Ultimate Spider-Man; Age of Sentry (I've picked them up but not read them yet, they look fun and old-school); Supergirl: Cosmic Adventures in the 8th Grade...
But honestly... the best 'old-fashioned, fun-to-follow superhero' comic I can think of?
Tom Strong (also, Tom Strong's Terrific Tales).
Unfortunately... all of these have finished. If you want one to add to your pull list... I can't think of any. Neil Gaiman's Batman comic is cool, but only 1 issues is out and there's only 1 issue left. The closest I have to a superhero comic in my pullbox (other than Empowered) is Runaways and I'm not enjoying it much. Other than that, I have Fables, BPRD and Hellboy, Scott Pilgrim, Spider-Man Loves Mary Jane (not enjoying that too much either), 100 Bullets (almost finished), Bone, and that's about it.