Flex play: Boldin, JStew, or Barber?

[Whisper]

1/2 PPR, all else is standard scoring, need to decide on my flex player this week between:

Boldin vs. Indy

JStew vs. Atl

Barber @ Denver

Right now I'm leaning toward Boldin based on the match-up, the fact that he's still Baltimore's WR1 even though they went way run-heavy last week (vs. JStew who has Newton and DWill to compete against, and Barber who's on an offense that just stinks right now and may not get many red zone opportunities). But I'm worried Baltimore might get up big early and then stick with Rice.

Thoughts? Thanks.