Papa Johns pizza is the BEST PIZZA !! Nothing I've ever had from pizza chains comes even close. The sauce is a tad sweet which I like, and the crust is the best of any chain too.
DOMINOS is the WORST pizza I have ever had. They are messy, not neat at all, toppings are haphazardly thrown everywhere, plus most importantly, their pizza tastes HORRIBLE!
PIZZA HUT uses 5 oz of grease on their pans for each pizza (or so I've heard). It is the greasiest out there.
Sorry, I just had to rant. DOMINOS is for drunken frat parties where you don't care what you're eating.