Right away someone is going to say "wait, Chicago pizza isn't nasty" but that's not going to make me turn around and say "oh, my mistake it is good". If the OP has tried burgers in his area and not found anything that compares to In-and-Out than that's what's best for him/her.
Agreed, some Chicago pizza is nasty. I personally hate Lou Malnati's which is always featured on the Food Network as "the" Chicago pizza to eat...yet it makes me cringe when anyone drags me there. But that said I LOVE Giordano's. Different style of deep dish. But others would think this is blasphemy. Maybe you just haven't tried the "right" Chicago style pizza for you?