Make a move or stay put???

[Mr.Joshua]

Im real happy with my team as well as my bench, this is a 1 ppr league. These are the available free agents, is it worth dropping any of my bench to grab one? Keeping Ringer for CJ2K's handcuff. Any of these guys make my team better?

Quarterbacks

Cam Newton
Chad Henne
Rex Grossman
Ryan Fitzpatrick
Alex Smith

Running Backs

Cadillac Williams
Jerome Harrison
Ricky Williams
Deji Karim
Marion Barber
Tashard Choice
Dexter McCluster

Wide Receivers

Jacoby Jones
Devery Henderson
Brandon Gibson
Domenik Hixon
Mohamed Massaquoi
Jabar Gaffney
Randall Cobb