The decor/operation of
Big Herm's never bothered me, and I like to think of myself as "picky." As one example, I won't set foot in Weiner's Circle - because of the filth (and because of bad service/inferior product). As for other hot dog and similar fast food options in that area -
Fast Track at Lake St. and DesPlaines is a solid option - if you're already west of the Chicago River.
Some additional words about
Potbelly: I read a feature article on that business operation, maybe a year ago now. The present owner(s) is getting ready to franchise the business and the additional stores are part of the pre-offering/franchise plan. Not only will the Big Herm's space reportedly be filled by Potbelly, but a new Potbelly has opened in Presidential Towers - on the SW corner of Madison St. / Clinton St. This makes three or four of the restauran't outlets within two or three blocks of one another. I went into the new one in Presidential Towers a little while ago, and quickly walked out . . . after determining the wait time would be about 20-minutes. I like the sandwiches, but not enough to wait 20-minutes for one. Clearly, Potbelly is popular . . . all of the locations I've seen - and I'm supposing the owners are looking at the successful business model of Subway Sandwiches and saying to themselves "Why not us?" I was a patron of Potbelly at its original - first - location at Lincoln & Belden in the early-1980's - and long for those days once again.