He is, without a doubt, the #1 WR on the Bills, and I can't think of a team who has a worse #2 paired with their #1 WR than the Bills do (and I like Nelson). He is the WR that gets all the attention. Also, he and Fitz seem to have great chemistry.
And by the way, did you see what he did to Revis, most experts' best cornerback? He absolutely torched him. He is the second best player on the offense, behind Freddy, and I'm scared to imagine the dropoff in production for this offense without him.
And why, on this board of all places, where every other post seems to be a "Ralph is cheap" post, would anyone care how much he is paid? The Bills have the cap room. Its not our money. And contracts aren't guaranteed, so he can be cut at anytime. This isn't the NBA where one overpay will kill you.
To me, SJ is a must sign. Franchise him if need be.