Among the PP 5070, the VC Les Historiques Chrono and...Of course the Lange, Datograph.
Between all these refs, the Duo Metre is on the top, really.
Technically more spohisticated than a Dato, as I said in the Review I made about it.
After the color of the metal is not that important, IMO...
Although I prefer the platinum for its stunning elegance and discretion, the RG is another interesting choice.
I'd put the YG LE in 3rd position, as I prefer the grained dialof the platinum and RG version...
But, as usual, a matter of taste...
best, and thanks for your input, Respo!
Nicolas