Never have been there but have been to Barnaby's a couple of times. How do they compare?
For me, Barnaby's is just another pizza place. I don't care for thin crust pizza. Politos is more along the lines of A LOT of food. They have a stuffed pizza that is 16 POUNDS! Their calzones are wonderful.
Here is the 16 pound pie we split at our last meet-n-eat