Gotta agree with a few points above, PH is better out of the two, but in most places a good local joint will kick PH's ass. We've got a reasonably good local chain that do a stuffed crust. We've been eating Papa Johns though lately 'cause they've only just appeared in the UK and I LOOOOOVE that dipping sauce (even if it is artery clogging yumminess). I also like to make my own although I don't usually bother...all that dough raising takes forever.
Also, I worked in a PH for a little while and while I agree that they are very careful with measurements, the measurements are fairly generous compared to what you can get elsewhere. Also I was impressed by the level of cleanliness I saw. This probably doesn't hold true in all their restaurants (or most restauraunts full stop, some places are NASTY) but the couple I drove delivery for were clean and quick.
Of course when you start talking about European Pizza (proper pizza in reality) with lovely thin crispy crust and so forth you've gotta go with local pizzarias in whatever town you are travelling in. We don't have any good places here where I live at the moment but we were in France a few weeks ago, place in the lower alps about an hours drive over the mountain from Italy called Annecy, and there were SEVERAL fantastic pizzarias in that town. Gotta be careful you know what you are ordering though or else you might get mussles on your pizza!
Can you tell I like pizza??
