I’ve checked all 4 of them and the yellow gold Q5011410 is an instant winner for me! I’ve always loved regulator displays and this guilloché dial looks gorgeous. And I’m a colored gold guy, so this is really the one for me! I like the 3 others a lot less (but it’s only my taste of course). Thanks again. Best, Emmanuel
Q5011410 (credit: Rostovsky Watches)
Q1646410
(credit: Rostovsky Watches)
Q1646420
(credit: Rostovsky Watches)
Q1646409
(credit: Rostovsky Watches)