I think Rolex is a good choice, good resale value. The design of Rolex is always evergreen, yet i think datejust is one of the flagship of Rolex. I will go for old Rolex because of its high demand and the values keep appreciating!! I own a 20 yrs old Rolex which I bought for 15k. Now it's around 30k!!! (I am not a supporter of Rolex in fact) Movement wise, Rolex is chrono based, i dun think there will any precision problem. Tudor is not really my cup of tea... to be frank!
DC. if the condition of the Rolex is good. then go for it.