Anyone who claims they know who has "The Best Pizza in New York" is sure to come up against some skeptics. But Nonna's L.E.S. is up there with the better known. Keste and Motorino. No points for ambience, but if you happen to live on the Lower East Side, order the Paesano. This rectangular pie, topped with homemade fresh mozzerella, Nonna's secret sauce, sausage, roasted red peppers and mushrooms, is worth the $26 price tag. (Or $4.50 for a slice.)