I know there is that other sandwich shoppe peppered all over town which also starts with a P *cough splutta cough* But Peppi's never lets me down. It's around the corner from my office and its not a chain so yea I hit it up for lunch with the partners in crime once in a while.
the Philly cheese-steak never lets me down, fries portions are huge and you can pretty much split one sandwich and one large Fries with two drinks between two people for around 14$ not bad on the wallet not bad at all.
Plus they have a poster of John Lee Hooker on the wall, plus other celebrity pics who have eaten there over the years.
Service is zippy but it is a cash only joint.... again there is ATM from 1986 sitting in the corner. It looks like it won't work then takes a confusing 30 seconds to spit your money out but it does work. If Peppi's took credit cards I would give them 5 stars.
Probably not a great spot for vegetarians. I don't know of many veg options on the menu. Definitely a Pittsburgh Classic lunch spot, and their sandwich did not give me tummyaches like that other P sandwich shop's sandwich did.