BigFatPauli
1899
Hold on a sec....
Is your reasoning for steel Rolex watches being more expensive than QP's and tourbillions is due to modern manufacturing?
"[T]he perpetual calendar (again, simplified by IWC's da vinci) that can now be found on the secondary market for less than most Rolex sports watches"
...
"Time changes everything. With CNC and available manufacturing machinery, manufacturing has become easier."
But to answer your question, the MR is the answer with a second place held by multi-split chono's like the Double and Triple split or the LM Sequential Evo.