Jeff, I had a similar experience this week. I hit Patsy's, Sally's. and Pepe's on Tuesday on my ride back from the NY pizza show. It was hard to save room for the later places because my first pie at Patsy's turned out great. I did somehow manage to only eat three slices. It was my first time there trying the fresh mozzarella, and it made all the difference. I can't say that it was cooked perfectly as it was a little light on the bottom when compared to the top, but still a great pie.
My next stop was Sally's. This was my first time ever not seeing a line (probably because it was Tues night) and I sat right down. It was still forever to get approached and get my pie, but well worth the wait. Even with the processed mozzarella this pie was truly amazing. The sauce, crust, and the general flavor of the pie were all top notch. I was able to sit at the mini booth right in front of the pizziolo and I saw him add what I am assuming was grated cheese, pepper, salt, for the dry ingredients (I didn't see any herbs on the pie). Maybe they use Romano, Parmesan, and salt or something. He definitely added three different dry seasonings. He then added two liquids, one that was obviously a good quality olive oil, but the other liquid stumped me. He squirted on what really looked like water. It was totally clear, and definitely the viscosity of water not oil. There was a slight onion flavor to the pies, which I am assuming is being cooked into the sauce, but I am stumped. Does anybody have any idea what this could have been?
My last stop was Pepe's right down the street. I had never been able to try Pepe's and Sally's with visits closer than a month apart, so it was time to do a back to back comparison. Both places are obviously making the same type of pie. I have heard people say that one place is thicker than the other, but on this day they both had exactly the same thickness, and amount of sauce and cheese. As soon as I ordered I started to get worried when I realized that unlike the first two places, this was a college (or possibly high school) kid making the pies. To my surprise he actually did a great job, but the quality of the ingredients is holding this place back. The sauce and cheese were very obviously a big step down from Sally's, and a decent step down from Patsy's as well. I don't know if it was just that day, but Pepe's uses a TON of Romano put on last after the mozzarella. One squirt of oil, and the pies are in the oven.
One thing is for sure, the oven at Patsy's was way hotter then the New Haven places, and the final crust really showed what that difference can do. The Patsy's pies had the fluffiest most tender crust, but the really hot oven makes it hard for them to make a consistent product. Pepe's oven was not hot at all that day, and the pie took over twice as long to cook as Patsy's. Sally's was right in the middle. The sauce at Sally's is miles ahead of the other two. The moral of the story is if you are in New Haven, take the time to wait for Sally's!