Subway is Subway. All the restaurants are the same so you know what you are getting most of the time. You can't plan for unfriendly workers at any restaurant. We had some visiting people from the UK at work and they ate their almost every day for 2 weeks; just to get the flat bread. Personally I prefer the regular sub bread.
A foot long combo is almost $10. Not the cheapest. I prefer Diabello's in Market Square. This place is right next to Brueggers. Not sure why there are so many Subways and Brueggers in downtown Pittsburgh.