This is my go-to soup recommendation because the soups taste good, the portions are perfect and the price is right.
Everyone talks about the freestyle lunch here but what you really want to try at Olly's are the soups. For under $5.00 including tax, you can get a quality small soup with a whole wheat multi-grain bun. Chili is ~$4.50 and regular soup is ~$3.50.
Recognizing that Soup Nutsy is usually the most popular choice, I find that it's quite pricey for a small at $7.35. Plus, I don't need the 2 sides that it comes with. McEwan's has a daily selection of 6 soups and it is ~$6.00 for a small which is pretty decent - I'd rank this as my 2nd choice. Skip Soup It Up and Picnic because they're usually quite bland.