Who would be a good young James T Kirk

Kirk will be a hard character to play because so many people already associate Shatner with the role. I think young Kirk would have to be played by a mostly unknown actor, because if people are comparing the actor to other roles he's played, it will be hard for them to think of him as Kirk. I know a lot of fans, including me, are still kind of iffy about young versions of such famous characters being played by other people.

Okay, well I already know that Zachary Quinto has been casted for the role of Mr. Spock, so who should play Captain James T Kirk? Hmm... this is a tough one?