Which WR do I start..WHIR

[hess8228]

Brandon Lloyd who has been shaky at best with the exception of last week vs. San Fran (gives up the 4th fewest points to WR's)
OR
Andre Roberts who has scored more points overall than Lloyd on the year vs.DET (gives up 11th MOST points to WR's)

I have Lloyd in now but have little confidence in him vs. a great D. Suggestions?