All three suffer from the same droopy subdials. Lange movement is a little above Patek, but certainly not by a lot. Case work on 5170 is a little simple for me. The 5172 is brilliant, not just the triple-stepped lugs, also the sides are more complex then the Lange’s and the 5170. I love the syringe hands and they’re a good size too. I find the hands on the 5170 a bit thin and short.