WR quandary

Darrell Jackson -- @ Minnesota
Chad Johnson -- @ Baltimore
Hines Ward -- vs Oakland

Gotta start two out of those three.

All have been money at one time or another this year, if not just about 
every week. Concerned about Ward a bit --- Maddox limping on sore knee and 
Oakland offense probably isn't powerful enough to make Steelers go to the 
air that much. Should I start him anyway? Go with Jackson, who's hot and 
playing a poor pass D (and a team who will likely force Seahawks to pass 
often) in Minnesota? What about Johnson? Is he a lock?

Your thoughts, please.

Later ---
Michael