Your enthusiasm for the 3940. I wore one as my Dailey watch for about 10 years before I moved on to something a bit bigger and easier to read ( the Patek Philippe 5320g). Truth of the matter is that I still miss my 3940 from time to time. There are other people here on the Forum who can perhaps give you advice regarding the collectability or investment potential of the different incarnations of the 3940. I can only speak of its wearability and the pleasure it brought me as a fine timepiece. Part of what I enjoyed about it was the extremely low profile of the watch. The 3940 is pure class and a completely understated example of horological sophistication. You will love it in whatever version you may settle on.