I just bought a copy of the Barbecue Lover's Guide to Austin, by Gloria Corral.
Corral has write-ups on nearly 60 places within the city of Austin. Subtract the chains (anything with more than one outlet, which knocks out County Line, Bill Miller, Cartwright's and PoK-e-Jo's, among others) and there are still about 35 joints, from Franklin to Old School BBQ's yellow bus. Most of them look like places we'd love to visit. And Corral is already working on a second edition so there could be more next time.