I'd like any of them, but I think the way it looks, I'd take Roy Williams first. I think Chad Johnson is fun to watch and a great player, but I'm not sure if he's the person to come to a rebuilding team. I also think he's not the player you need across from Ginn, considering he's another quick "smaller" type of WR.
I've been wanting a "big" WR who can go up and catch anything and be reliable when the ball comes to him. I'd prefer Fitzgerald over anyone, to be honest. He's young and he's a great player. But, he'll want tons of money and the Cardinals have been talking about a first rounder all along. I don't think they'll let him go for less.
I've seen lots of people saying the Lions would let Williams go for a second. He's a big, athletic receiver who'd complement Ginn perfectly. If we could get him for the pick we got for Chambers, I'd be all for it.
I think WR is one of the positions I'd like to look at in FA because you need someone to come in and be a target for whoever our QB is. Having both young QB's and WR's can be tough. I'd take any of these guys. I'd also take Berrian or any of the FA WR's, over M. Booker at this point.