Great thin crust - NYC, NJIt doesn't matter if it is flat or deep dish, it all can be bad pizza depending on the chain, company, or who makes it. I've had great thin crust pizza, but I've had bad thin crust pizza also.
Not great thin crust - FL and anywhere in the South
The opposite
Great barbeque - Few places FL , NC,SC but tops is TX.
Not great barbeque - NYC, NJ