Who's a good WR to pick up?

I have Steve Smith and Larry Fitzgerald ( who I acquired from trading TO ) and Marvin Harrison. Obviously Smith and Fitz are always starters, but Harrison is horrible and my RBs are pretty bad too so I need a good option for W/R. I had Kevin Curtis but dropped him week 1, and I had Roy WIlliams but dropped him right before he went to Dallas. I'm looking at picking up either Bernard Berrian ( he has some pretty good numbers, especially after getting a new QB ) or getting Kevin Curits back, but I'm not exactly sure how good he is, or how much help he will be since McNabb already has a bunch of options.