On a different website I asked a New Hampshire resident about Manchester and here's his reply:
"PigTrip.net focuses on New England BBQ, he's more up-to-date than I am. I just wish he had better searching and an RSS feed...
From a purist standpoint, I always am somewhat disappointed in KC's. They overcook their pork and the sides are bland, but it's actually not all that bad, and better than most of the MA joints I've been to. I'm not sure there's a better place anywhere in the area now that Down n' Dirty and City Flame are gone."