Gordon Strong's book would be next in that it is written by a winner of Homebrewer of the Year back when people medaled in multiple catergories in the NHC. There is just one caveat. He has his own particular brewing philosophy which if you brew exclusively with RO water will work like a charm, but if you find part of the challenge/enjoyment of brewing is messing with water chemistry than you might not like it as much. I'm in the latter category so I haven't read the book, but I can't argue with his results.