Just get any 5002....
....it is a truly fantastic watch and this 'transitional' hype doesn't make sence to me at all....
The watch nor the calibre is scarce, maybe the combination was 'limited' to a certain production period but what is that worth to YOU?
To me it seems a bit of a self-declared collectors item. Of course I understand that 'limited' productions theoratically could have a higher value, but in what context is that generating additional value?
Anyway, the fact that people already made up a name for it, the 'transitional BP', probably proves me wrong ,-)
However, if YOU find it important what the calibre is or at what beat it runs, choose that one! Again, it is a great watch in whatever combination.
Best regards,
Bob