I have been looking closely at the three references 5115, 5116 and 5119. While each has its charm, I wonder if I don’t prefer the 5116: I think the welded lugs would work better for me here than the case shape of 5115 with “integrated” lugs and crown guards. Doesn’t this sportier case shape work better on a watch like the 5110? I think it’s how I feel. Also, the longer Roman numerals and cleaner dial with no hours/minutes track is a little more coherent with the dressy aesthetic and hobnail bezel, imo. Last detail: with the 5116, you get to see the 215 caliber which is nicely displayed.
That said, I would have to see these watches in person to be sure about how I feel. Judging from photos only isn’t reliable. And of course your feeling might differ from mine.
I wish you the best for this tough choice.
Best, Emmanuel