In the insulated world of internet Rolex forums, the classic Sub is deemed to be the 'most popular' model in the Rolex line. But if one could possibly divorce themselves from the on line bubble, this iconic model with that Champagne dial is most likely THE most sold around the world. A wide angled view of the number of people wearing this model over the past decades at least gives the impression it is far more popular than the Sub with the Rolex wearing population.
As for the bracelet stretch, it is widely thought that issue is the deterioration of the steel attaching bars between the links and not the links themselves that have stretched. Rolex forums are awash with comments from those who have discovered and used the services of at least two craft shops that have developed the mechanical technology to pull apart the links and replace the internal shafts holding the whole assembly together, thereby returning to 'factory new' the condition of the Jubilee bracelet.