Hi Dje,
I went through the same choice debate last month, and although I like APs a lot and own Royal Oaks, in the end I bought the 5711.
What I can tell you, is that the dial is mesmerizing, and the whole watch just sits perfectly on the wrist. The Oaks are more rough in their edges and seem way less elegant/subtle, especially for everyday wear. Finally the sound of that rotor is second to none. You have to hear it.
I would vote the 5711, because you might be paying more when buying it than the Oak Jumbo, but it keeps its value twice as good, so you get the advantage back there.
Having aid the above, you will enjoy both watches enormously I am sure, no matter which one you will choose.
All the best,
Alexandros