Chain pizza places should be banned. The best pizza is made from some short italian guy flipping dough that was made fresh by his wife in the back room. The closest I will ever get to "Chicago Style" is a sicilian slice.
The key to great pizza (and bagels) is the water used to make the dough. This is why NY (not just NYC, but also the burbs) has some of the best pizza - Joe's, John's, Patsy's, La Scala, Nick's, etc. As to the poll - thin, foldable.
Growing up, for $1, you could get a slice and a fountain soda for 75c and use the quarter change to play Donkey Kong or Pacman. The only toppings were sausage, pepperoni, mushroom and meatball, and if you asked for one of them you got the evil eye from the wife.