Fantasy Help. Ravens D or Texans D?

Its winners bracket week in fantasy football. This **** is serious. I'm in the lead for my first week but i need a guarantee. It is boiling down to the right defensive play to pick this week. Should I play Ravens defense who is face the Chicago this week with interception prone Jay Cutler. Or should i play Texans D that is facing the Rams this week with a week quarterback status as Marc Bulger is out and and Kyle Boller is playing with 5 interceptions and one fumble in his last game. Who should i play?