Jason Campbell or David Garrard?

I'm in a points-per-reception league and I currently have Joseph Addai, Dominic Rhodes, and Tim Hightower as my running backs. I'm wondering if it would be a better play this week to start Addai and Rhodes assuming that one of the Colts running backs will get big numbers. Or, is it a better idea to start Addai and Hightower and not mess around with the Colts tandem? What do you think?