OSRIC exists so you can publish AD&D adventures and other AD&D stuff. It's written for clarity, not inspiration for adventure. It's basically the SRD for TSR's AD&D (minus a few trademarked bits, a couple things shifted, etc). It deserves much kudos for what it accomplished.
However, if you have the original books and you're happy with them, there's no reason to use OSRIC.
I like/use/play Swords & Wizardry: White Box because it's a cleaned up 0e with enough flavor for me. However, the OSR has been cranking out retroclones and retrowhatevers for almost two decades now so you have a phenomenal number of choices for "TSR(ish) flavored D&D"
If you like Greek myths via Hollywood via AD&D, I highly suggest MAZES & MINOTAURS. It's free.
http://mazesandminotaurs.free.fr/There's a Valkyries & Vikings version too! But you gotta play
Amon Amarth while reading the PDF or you won't generate enough runic protection and you'll be slain by ice trolls.
http://mazesandminotaurs.free.fr/VIK.html