Geoff John's Green Lantern run without a doubt.
Bruce Wayne's Batman
I honestly don't know. Each one has a few stories that are on my favourites list, so I can't make a definite decision.
Why I like DC
Because DC executes complex and compelling plot-lines, narrative, and story-arcs exponentially better than a lot of other publishers. Sure, Marvel has some really cool characters, but I more often than not find myself disinterested in the antics they're involved in.
DC is engaging, interesting, and a whole lot of other positive adjectives. It's by no means my favourite publisher, but I sure do love the things they churn out.