Sue at DC Women Kicking Ass points out that DC has changed the cover on Birds of Prey #13 from what was solicited. Ben Oliver created the artsy, solicited cover, while Trevor McCarthy drew the dynamic one that showed up with DC's preview of the issue. Both can be seen in all their glory below.
They're both attractive pieces of work, so this isn't about one of them being bad. What I'm interested in are the different purposes the two covers serve. Oliver's, as Sue points out, is eye-catching and "poster material." Rob Staeger notes in the comments, however, that McCarthy's cover, while busier, better communicates what's in the story.
My question for you is: Which do you prefer? Not just for this particular issue, but in general. Are you more likely to try a new comic with an artful, but interchangeable depiction of the main characters? Or with a powerful representation of what's going on in the story?