Potbelly: Mediocre sandos. Their only favorable attribute is their "hot peppers" add on.
Which wich: Great variety of sandos fitting any particular need you may have at that time. Good sandos.
Jimmy Johns: Good quality sandos, but doesn't exactly fit my choices. Im more of a hot sando man and JJ does not give me this.
Jersey mikes: Quality, delicious sandos.
Im also a big fan of Stone Mill Bakery. Not to mention central market or specs, which offer quality ingredients. If I had to rank all of the establishments i'd have to say:
Stone Mill > CM > Specs > Jersey Mikes > WW > JJ > Potbelly's > Quizno's > Subway.
Thats not to say there is much difference between some of the establishment rakings, specifically at the top.