The 5711 is the subject of an unprecedented bubble, whereas its close peer, the RO, is not. Ten years ago, the valuations were much closer, and for a reason; they're comparable watches. That said, I obviously might be wrong about future valuations. Just to be clear, though, I'm not remotely biased in favor of the the AP brand over Patek. I own a Patek and not an AP, and in fact I sold my only AP -- a ROC -- a year ago because I had grown tired of it.