I'm hooked on the "Flash" (Italian) sub. I used to frequent a La Crosse area E&G so I was thrilled to see one show up in Sun Prairie. I stop in once or twice a week via drive through.
E&G subs are typically flavorful, and I like the extra chunk of bread scooped out of the middle... I guess I'm a regular there now, they remember that I want a packet of mayo to dip it in without me asking.
This E&G is in a building that isn't new or flashy, but it's worth stopping if you want a good sandwich and soup. They aren't freaky fast, but not so slow as to be a problem either.