The determining factor for me was how many losses he contributed to. I can't really think of any severe mistakes by him that cost us any games. Him, Helu, and Darrell Young seem to be the only ones not costing us games.
Honorable mention to Hall though. He's been a stand up team mate and has turned himself into a solid, reliable corner as far as I'm concerned. I didn't think he could.
Garcon is a freaking beast. He has really come in to his own.