I will probably try to purchase a 1680 from the year 1978 (which is my birth year) or 16800 and for the other vintage models probably gmt 1675/16750 and a date just 1600/16000. I think those are among the essential watches from Rolex that are still affordable. As I said before I am just a very very modest collector. Hadn't I purchased my El Primero Subsea chrono, I would have purchased a 1680.