The 5522 is certainly more exclusive (600 pieces vs. several thousand and counting), and also less "commercial", which is more and more important to me. Actually, to be entirely open with you, this 5522 was offered to me at $55k in 2017...by a jeweler sitting *right across* one of Boston's two ADs (if you know Boston's downtown geography, you've understood). I'm sure someone did eventually buy the 5522 for that price (which is still entirely within the market price), but I just promised myself to never buy above MSRP, save exceptional circumstances... So far I got lucky and always bought from ADs, let's see if I will always be able to keep my promise. ;-)