Which Fantasy D/ST would you start this week? Den or Pit?

Should I start Denver's defense/special teams @ KC or Pittsburgh's vs BAL? KC is atrocious on offense, but Denver's defense is not the best. Pittsburgh is at home vs a bad Baltimore offense with a rookie QB. Plus Pitt is coming off a bad loss but are mising their starting nose tackle, Casey Hampton. Tough call, Im leaning towards Pitt. What do you think?