Quality of higher-end Seiko vs Rolex

[L_S_SHOE]

I've caught the Seiko bug. I intend to pick up an SRP777, but the more I look the more I'm thinking of also grabbing something a little bit nicer.

Unfortunately, I'm not in a position to handle a higher-end Seiko or Grand Seiko, so I can't answer this question by visiting an AD. I've been told the quality of a Grand Seiko is at least as good as a Rolex. How about something like the SLA033? Specifically, how is the overall fit and finish, and how does the movement compare? Is a $4k Seiko really on par with a $9k Sub? I'm not suggesting that it should be, just curious if it is.