On the whole, Fairley provides vastly more dollar value than Suh.
Suh is the most dominant force at DT in the league, and he's going to get paid like a QB.
Fairley is a dominant force at DT, and he's going to get paid less than Pot Roast.
With Fairly you have the chance to build. With Suh, you are built, and you are done spending.
Of the two, I'd rather have Suh back if the money is right, but bringing back Fairley and saying goodbye to Suh is an okay option with me.
Suh long term, we can still spend on other free agents. Franchise limits us to our own and one other guy