Scoring is 30/6 for running backs, so I went with Anderson over Caddy because Mike gets touchdowns.
It's funny, because I posted two threads asking the same question (who to start: Anderson, Caddy, or Galloway since it was a flex) and didn't get any responses (which probably would've been people telling me to start Caddy anyway). So always go with your gut rather than what other people tell you I suppose...