I'm going to cautiously put my head above the parapet and say that I not a big fan of Rangoon. I have two suits tailored by different houses from the original end run of Minnis Rangoon and I am not impressed with the way it drapes. Much worse than Airborne (which is lighter weight I think).
I bought the end lots of Rangoon and Airborne too ( They were less than GBP20/m back then!! ), I think I still have fews metres left. I have two Rangoon and two Airborne suits made, I would said Rangoon drape much much much better than the Airborne.