The Manna Bagel Company
634 State St
Bristol, TN 37620 USA
I can put up with the religious slant for their particular sect for the well-made soup. If you eat lightly, this place is actually quite cheap, but the price goes up quickly if a bagel and soup aren't enough.
The bagels are quite good, too. Not mind-blowing, but much better than I expected to find around here.
They don't mind people sitting for quite a while (reading, on-line, playing chess, etc.), either. But the music will grate on some people more quickly than on others…