I used to love their steak and cheese, but stopped in last year for one and it was terrible. Maybe it was an off day, but I ended up throwing most of it away. I like to use UrbanSpoon to guage user reviews, and South End rates at
58% of patrons liking it.
Yelp on the other hand has only one vote at 4/5.
SAMIAM and I are still waiting to hear who voted it best. If it's a reliable source, I'd try it again, but don't care to throw away another lunch. IMHO