Supreme Court Nominees

With the announcement of Justice Stevens retirement begins the forecasting season for who the next nominee will be. Slate.com offers a nice list of possible nominees at http://www.slate.com/id/2250251?obref=obinsite. While I don't have any special insight, my suspicion is that Obama will go for someone like either Sunstein or Warren. They both possess the academic credentials that Obama seems to like and seem like relatively centrist picks (based on what I read on slate). I just cannot imagine that Obama wants to repeat the battles he faced with Sotomayer. I am curious how other folks interpret the situation.