Without question? Valbuena's been a better hitter the past three seasons, projects to be a better hitter next season, is the same age, and Desmond needed good defense and baserunning in an elite defensive position to give him value. Put them both at first and while Desmond might be a marginally better defender and much better runner, Valbuena's probably a better hitter to where it might be a lot closer than you might think.