I'm at the point where I'm not looking for much in the way of new systems, but regardless I always take a look! In particular I'm fond of skipping right to the classes, or maybe the sections on encumbrance, and looking for little rules to steal for my own game.

After all, when I do move away from Advanced OSE I'll probably be putting together my own thing anyway.

That being said, I did get started with OSR games by playing smaller indie stuff, not just B/X and OD&D. So I'll always have a soft spot for SS&SS and the GLOG and Whitehack.