CIZ28, with all due respect, I'm not sure where in the NE you're spending your time, because, in the NY area, 10-12 minutes is definitely not the norm. As you travel further South to Trenton and Philly, then perhaps the bake times increase, but in the outer boroughs (Brooklyn, Staten Island, Western areas of Long Island, Queens, Bronx and NE NJ), you're going to have a hard time finding bake times longer than 8 minutes. I've been timing bakes in NE NJ for the last two years, and, out of, maybe 20 places, no one's exceeded 8 minutes, with the majority coming in around 6- and these are the mediocre, completely non descript, run of the mill places. Even in the pizza wasteland that is Manhattan (where you will find an empty pizzeria or two selling 12-15 minute pies), Joe's still comes in under 7 minutes, and, while Joe's is okay, most of the members here who have tried it weren't blown away. Also, I wouldn't give these to my worst enemy, but all the crappy dollar slice places in Manhattan are doing less than 8 minute bakes. They wouldn't be able to do the kind of volume they do with any slower of a bake time.
The list of 4 minute slices, is, unfortunately, not a long one. Historically, there were a lot more 4 minute options, but the chains crept in, started taking business away, and in an effort to compete, the independents started increasing thickness factors to accommodate more toppings and extended their bake times. The demise of the 4 minute slice has been tragic. It isn't completely dead though. Here are some of the better known places:
Pizza Town (Elmwood Park, NJ)
Best Pizza (Brooklyn)
Williamsburg Pizza (Brooklyn)
New Park Pizza (Brooklyn)
These are the owners that understand the explosive quality that's achieved with fast bakes. Now, I will point out that these, for the most part are puffy chewy pizzas and generally not crispy. Unless you're working with the dry heat of a coal oven, you won't get crispy in 4 minutes. The traditional NY slice was never that crispy. I will also point out that, as far as I know, none of these are Baker's Prides. I do know, for a fact, though, that the brick ceiling Marsal MBs can go as low as a 3 minute bake, and, until recently, BP was offering a brick ceiling option with the same BTUs on the Y-600 that could have matched that bake time. I don't know how many minutes get tacked on without the bricks, but, I'm sure that out of the 20 or so places that I've timed, at least 12 were Baker's Prides.
For a typical gas deck oven, 6 minute bakes are no problem. 6-7 minute bakes generally don't produce the oven spring you see with 4 minute pies, but you find them all over the outer boroughs.