Popped into to the new sandwich shop WHIZ today for lunch. This is a new place by the Beer Belly crew and is right around the corner from BB on 6th St. (they opened for biz earlier this week). As reflected in the name, they are featuring Philly cheesesteaks.
It's a small storefront with some tables on the sidewalk outside (no indoor seating). I picked up a WHIZ WIT to go as they were doing a brisk business and all of the tables were full (and I only live a couple of blocks away so I thought it wouldn't get too soggy/steamed in the wrapper). it was a solid cheesesteak. About the same price as BOO's, but I would give WHIZ an edge on flavor. The sandwich also had a tad more meat than Boo's.
They also have a couple of burgers, hot sandwiches, hoagies, wings and loaded up fries (with things like cheese, onions & bacon on them). Unfortunately, no beer--just soft drinks. Maybe you could carry a sandwich over to Beer Belly and get the best of both worlds. I haven't tried anything else on the menu yet, but a really good addition to the neighborhood.