brady is the clear #1.
i can think of 5 guys you can make the arguement for a the 2nd most valuable.
Gronk, Welker, Light, Wilfork, and Mayo.
my vote would be for Gronk with Wilfork a very close 2nd.
If Gronk turns out to be inactive come sunday and i were running the books in vegas the shift in the line towards the giants would have to be HUGE.