I tried NYP when it came out (shortly after 14th street) and it seemed 'bleh, its alright'.
Then I tried Broadway and fell in love with it.
#1 pizza in town. Almost a year later, its quality has gone down and the strange sauce (cheese?!) in the crust is outrageously bad.
I've been spamming NYP for the last 3 months. The dough is so good. It's not too crisp, but not too pan-like either. It's a soft cheesy goodness like no other. And the flavour.. Oh and the crust.. OMG I want!!
TLDR; NYP all the way!