Le Monde Edmond
1049
Both
If money is no option and you aim is too build a collection -both are a MUST. Both are iconic sports watches.
If you could only chose one however, I would go for the Royal Oak. Its more unique, more sportier and just in my opinion
the more interesting and watch. I personally own both but have had the Royal Oak much before the Nautillus.
Both are lengendary watches made by great houses. You cannot go wrong either way....