ASSUME!!!I have the Electric Blue, Great White, PO and SD. I can honestly say I can't really tell the difference between the built quality. I haven't had any problem with any of them. I would [BOLD]assume[/BOLD] the Rolex would be higher built quality since it costs more than twice as much, but you're talking about between 99% and 100% here. Omega is definitely better bang for the bucks.