NFL greatest head coaches...

1:Vince Lombardi,2:George Halas,3:Chuck Noll,tie:Bill Walsh,5:Don Shula... my opinion:actually,because of the NFL founder status,of Halas,i was tempted to put Halas first on my list... i may not like the Chicago Bears,but Halas i do honestly respect very much... just off my list:Bill Parcells,Marv Levy,and Bill Belichick(not in that order)...