I wanted "comprehensive" in my TCM formulas book, and thanks to Chen & Chen's "Chinese Herbal Formulas and Applications", I got it. The best things about it: lists literal formula names, alternate names, original source with original prep instructions and modern ones, clinical manifestations typical for appropriate use and applications thereof, detailed explanation of the formula and all ingredients, a quick-glance chart for each formula, modifications, cautions/contraindications, pharmacological effects, clinical studies and research (example: "Ban Xia Xie Xin Tang" discusses clinical studies done on its effectiveness for 4 different types of gastritis/peptic ulcers/GERD/upper GI bleeding/morning sickness/infantile indigestion/gastroptosis/gastroenteritis/stomach pain/abdominal pain/IBS/ulcerative colitis/diarrhea/cholecystitis and cholelithiasis/hepatitis/renal failure/stress and depression), herb-drug interaction(!), toxicology, and comparisons of similar formulas. YAY!