Leave it to the Daily Mail to publish the top 101 pizzas in the USA. http://www.dailymail.co.uk/femail/article-2736863/Is-white-clam-pizza-best-America-Experts-rank-101-pies-perfect-slice.html Been to Frank Pepe's in New Haven a few times, and to me, its the best pizza I've ever had, but never tried the clam pie. Now I have a reason to stop in Trenton for tomato pie.
Papa's is pretty good and he likes AC, too. DeLorenzo's in Robbinsville (NOT the one in Hamilton) and Tacconelli's in Maple Shade are slightly better than Papa's in my opinion.
I've been to #3-#5, and a few others scattered down the list. I don't get too caught up in ordinal gradients, 17 should be 21 and 33 should be 29. Nice to see Tom Douglas make the list with Serious Pie.