Interesting point you raise. When you see this sublime collection of RG Reversos, yes, you can think so. But the round case family was not at the same level. Ok, you had the Memovox, the Geographic, the Perpetual Calendar, the RDM and the Master Control, but all of them weren't at the same level of sophistication.
For me, the golden years were somewhere between the mid 30ies and the late Fifties, early Sixties.
And nowadays, there are some strong offers, such as the Duometre, for example.
Best, GL!
Nicolas