1. Gary Patterson. Pros: .773 winning percentage; Defensive side of the ball; rising Cons: One school; non-SEC conference; declining? Scenario: Recruit at least Bray & Hunter; Retain CJC, CJG, & CSM on Offense; Show your defensive expertise in the SEC and turn the ship in year 1; Retain CJP; Secure TN borders and build deeper HS coach relationships THEN find the kids nationally that want to play for VOLS.
2. Charlie Strong. Much the same as Patterson. Shorter track record, but seems to have more buzz surrounding him. Scenario: Come show FL they made a mistake and prove you belong in the SEC. Doesn't break the bank and $$$ are an issue at TN now just like recruiting landscape is not the same as it was for CFP.
I like John Adams observation about not being able to recruit & beat UA, GA, SC, FL at their own game - strong D & power running approach. WE ALREADY HAVE AN ARIAL ATTACK IN CHANEY & GRAHAM MAKES OUR RUN GAME BETTER; maybe not as prolific as Petrino; but way more character demonstrated. Do the math: CJC + CJG > CBP.
Gruden? Who cares!
Stoops? To expensive but another good defensive background with SEC experience and an opportunity to play with the big names in the SEC.
3. Beyond Stoops, Patterson, and Strong I think you are into second tier at least from a perception standpoint.