I prefer CC's ref: 2520's bezel, which is similar to my ref: 2730 giving them both a more vintage look, enhanced on CC's by the Arabic numbers on the black dial. I do like my ref 2510, which retains the curved lugs of the ref 2520. The date on mine of course is controversial but I do like the red accent at 6. My old pictures shown here.
Best
Clive
Ref 2510

Illusion of curved back