Potbelly Sandwich is pretty good. I have no complaints but i'd also say it is nothing terribly special. To me, it is a step up from your typical Subway (which I also enjoy) but it is a different type of sandwich.
I got the chicken and cheddar sandwich, hot with pretty much all the toppings. It was pretty delicious. Nothing to write home about but I've came here before in the past and I wouldn't be against coming back again. There are more well crafted sandwich options to choose from and many toppings to add.
I did not get a shake this time but have in the past and they are pretty delicious just as they advertise.