I can't believe I'm saying this - ducks from foreseeable flailing New Yorkers - but if you're in New York for pizza ... leave. Leave now and drive the very short distance to West Haven, Connecticut. Specifically, to Zuppardi's.
When you get there, you must order the following as fast as you can:
The sausage pie with Zuppardi's house-made sausage was "I want to eat two large pizzas all-by-myself" delicious and the fresh clam pie is sooo unique and briny tasty. Get it with garlic and grated Romano. No cheese. Wait till you're sopping up all those clam juices with the crispy, chewy crust (no soggy crust here) ... mmm ... *wipes drool from keyboard*