personally, anything that i've seen that hasn't been hardcover like "saltwater aquariums" and "coral reef tanks" that you can get in the LFS for like 12-15 bucks are total garbage. they generally have good to decent information basic principles, but species indexes and compatibility are totally wrong, a lot of the time.
i have "marine invertebrates" volume 2, and it's great. anything that was written as a general index of species, with an aside to aquarium keeping, is better in my opinion, rather than a BUY A REEF AQUARIUM books.
i read one that said a mandarin is really easy to keep, a flame angel is 100% reef safe, carpet anemones are easy and "good community inhabitants" and the minimum size tank for a blue tang was 30 gallons.
i'm looking forward to billy's reviews!
my general advice on this topic, do some online research, find out the experts in your chosen field, and get the books they wrote. Calfo, Bourneman, the clam guy (can't remember his name!). Usually the really good books will be 35-100 buckeroos.
PS. i used to work for borders for quite a while, and i did read most of the saltwater section while i worked there in anticipation of starting my tank. that's where i'm getting the price mark.