My experience is from wearing the 114270 as a daily back in 2017 or so (sold after 1 year), and recently got the 3861 sapphire as a daily. My wrist fluctuates between 6.2” and 6.5”.
Hard choice. Overall I think it comes down to which design you like better (and it sounds like it’s the Speedy).
The other big difference is the clasp. The one on the 114270 was atrocious and one reason I sold it. After wearing modern clasps (e.g. 116710, 114200, 3861 sapphire sandwich, and hell even the GS clasps), it was really hard for me to get used to previous generation clasps. I guess some folks find it “charming”, but it wasn’t for me. One way to get around it is to find a modern bracelet/clasp for the 114270 (I did it for my 16570), though I imagine it’d be really hard to source one nowadays.
The 3861 clasp is solid and on par with modern ones, though I’m waiting on the Chronoscope one to come officially to the 3861 Speedy to get some adjustability.
Good luck! Don’t think you can go wrong with either one.
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