Nikosandros
Golden Procrastinator
The OP asked about getting an "AD&D experience" so I assumed that a similar, but simpler game, might be appropriate. If it only about the lore, I - of course - agree that it can be used with a different system.It seems that a lot of the advice is geared toward retroclones of various kinds. That's cool- I love them. But if that's the case, just choose the retroclone or OSR game that you like the best. But if your issue is not just with AD&D (as you state, you don't like OSRIC because of the system), then maybe you just don't want to play that style of game? In which case, see the paragraph I wrote above.