Matt Forte or Darren Mcfadden for week 1?

Who should I start in week 1 Matt Forte on the road against the colts cover 2 defence with freeney and bob sanders back and hungry as ever. Or should I start darren mcfadden against a susceptable denver run defence on monday night football in the black hole. I know that Forte is a starter and mcfadden is second in line in a Running back committee but I still find it difficult who do you think is the better option for week one?