I just finished reading Peter Chong's article on "The Vertical Collection: Three essential watches from A. Lange & Sohne" was extremely satisfying, since I "only" have 3 Langes in my collection. Sometimes it good to look at our collections and feel we are on point. There are many opinions on what should be your 3rd Lange, but for me it has always been the Zeitwerk! Still it is a controversial piece for Lange. Some say its too big, others feel its too cold (Germanic), but to me the Z has always been about making one side both simple unique and the other side, simply amazing.