who should be the next Buffy the Vampire Slayer?

Prior to Twilight, True Blood, and Vampire Diaries, there was Buffy Summers, a teenage blonde carrying out her fate as a slayer in the small town of Sunnydale.

Turns out (thanks to Warner Bros.) the blonde's coming back to town, only this time she's resurfacing on the big screen. 

So the obvious question remains: Who should replace S.M.G. as the slayer with perfect mix of sassy and sweet?
We thought long and hard, and ended up with three top contenders to fill the original vampire killer's shoes.

Rooney Mara
Even though we've yet to see David Fincher's adaptation of The Girl With The Dragon Tattoo, we think it's pretty safe to assume Rooney Mara can play badass.
The drawback: She might be a little too badass…

Mia Wasikowska
After checking out the trailer for the upcoming Jane Eyre remake, we think Wasikowska's definitely got a dark side behind her demure looks.

Minka Kelly
Let's face it, the Friday Night Lights actress definitely brings the hot-factor up a notch.  But some hair dye and that infamous cross necklace, we think she could definitely pull it off.  

Who would you pick?