...they fit your wrist. Of course it must be the case if you have them and are happy with it. Unfortunately, it's not my case : I had a Datograph long ago as its design and caliber are a marvel, but could not keep it as it was really uncomfortable on my wrist. Probably a mix of different factors : the height of the case giving a "hamburger effect" if I may say so just like I was having with the PP 3970, its weight due to its solid platinum case, and probably the case / lugs shape. Please do not misunderstand me, I don't criticize the watch but my wrist (probably small size and shape) which simply did not match with the Dato. I was so sad not to wear it but it was not reasonable to keep a watch that you cannot wear or without pleasure due to discomfort. I still regret but no choice

Yes I agree with Hari, Richard Lange is a beauty, but I would not be able to take out any of yor trio. So RL would have to come on top to complete your great L&S collection and make it a quatuor instead of a trio
Enjoy them and wear them in the best of health !
Mike