OK so I got the Kunze book and after 8 hours with it, I has given me 3 ideas right off the bat. A couple things that I didn't know but common sense would tell you if you sat in a dark room long enough. I have not waded through the technical brewery sections yet, but they seem to be aimed at the large breweries and tell you as much. Is it worth the $200 price I would say it depends, it does go through the processes of malting a full chapter. I say it is worth it if you are a pro brewrer (4th edition 2010) in all aspects, even with water and wastes streams, etc. If you are a homebrewer and want to know what the pros are doing I say spend it.
If you have the extra dough I would buy it. Mine was a gift but I would buy it.