I see you didn't get a reply from 1.5 years ago because I don't think such an animal exists. I too miss Sgt. Peppers and for whatever reason, the soup/salad-bar only concept never took off here. So I always make an effort to get to Sweet Tomatoes whenever I happen to be in Florida.
Around here, it looks like your choices are limited to good salad bars as an accompaniment to an otherwise conventional restaurant, such as you've found at Golden Bull.
This Chowhound post addresses the exact same issue around DC, I think you'll find a similar situation around Columbia/Baltimore.
http://chowhound.chow.com/topics/551274
It says a lot that the best salad bar I've found in the Columbia area is at Ruby Tuesday's. And the closest Sweet Tomatoes is in Raleigh, NC. :-(