I had some pizza from The Upper Crust in Lexington last night. This was my first pizza from any of the Upper Crust locations; it was very good, though not on par with Santarpio's or Regina's, in my opinion.
The pizza there is thin crust, with the bottom of the crust being very dry and crispy, the sauce is a bit on the chunky side, and the cheese is very tasty with just the right amont of seasoning.
I'd probably put it at the top of the list for pizza places in the immediate area, including Arlington. But Santarp's still rules for me--I'll be making about my one-millionth trip there in a few days.