Yachtmaster with the rubber strap

[peterskinner]

Greetings, my first post so hallo all. Seems a nice, useful forum, especially as I am quite keen on Rolex as a brand, but I'm also quite new to all this and learning as much as I can. So all views appreciated.
I am about to order a Yachtmaster 116655; the one with the Everose case and rubber strap.
Predictable question, but when you are spending the price of a new car you want reassurance (well, I do !)....the Yachtmaster still has the 3155 movement. Likely to be updated to 3255 before too many years.
Does it matter? Is accuracy and consistency likely to be much different ? I greatly value technical excellence and performance.
Thank you for any advice you can offer.