I'm actually kidding as well, I hate ketchup. I just get tired of hearing people say how you're supposed to eat something, especially when it is a 'Chicago thing.'
I do prefer Aurelio's, only because I don't know of Lou's near me. The best pizza in the Chicagoland area is actually Joe's Italian Villa, on 85th and Harlem.
YES YES YES!!!! Hands down the best thin crust pizza in all of Chicagoland! Seriously if you live far away drive your ass all the way down there and have this pizza. The best crust, toppings (especially sausage), and sauce combination. It is truly flawless pizza. The sausage makes my knees buckle. It's so damn delicious.
Have a cup of their minestrone soup too. They put meat in it and it is tasty.
I think I'll go there tomorrow.
Other notables,
Salernos
Parlermos on 63rd St
Premium Pizza
Pete's Pizza
Plus all the famous joints: Ginos, Giordanos, Connies, Uno, Lou Malnatis....
Papa Del's in Champaign IL