When I first started collecting - having read extensively about Constellations I was somewhat obsessed about having a Constellation with the ‘zenith’ of Omega’s movements, the cal 564.
Even when the forum grandees lauded the 561as the finest movement, I would be confused and think “why don’t / aren’t they praising the ‘better’ 564?”
Eventually I realised that the 564 isn’t better, just different. ( think of it as having an additional complication)
In fact, due to its perceived fragility some avoid the 564 - but taking on board the advice of watchmakers like
@Archer it shouldn’t present any issues if treated carefully.
I haven’t had a single quickset mechanism break on me (yet!)
The 564 was seen as a development with the quickset date but in terms of quality it is not necessarily better or more desirable.