The answer is Sin City. We've been disappointed by Batman before, and Warner Bros. doesn't have the best track record when it comes to its comic book properties. One look at the last two Superman and Batman films, as well as Catwoman and the upcoming Constantine clearly demonstrate this fact. Now, that's not to say Batman Begins will disappoint, but our hopes shouldn't be as high as they are.
Whereas Sin City looks intense, the creator of the series is directly involved, Robert Rodriguez went out on a very long limb to convince Miller to let him make it, and spent his own money to adapt the series. Additionally, Rodriguez is a huge comic book fanboy that knows he will be murdered by geeks more rabid than him if this blows. There is absolutely no way Sin City will be anything but awesome.
I vote for Sin City then.
EDIT: And who voted for Elektra? Come on now...