I sure won't this time around. I had the 15" unibody (public beta). It sure is a deal breaker. So I learned my lessons living on the bleeding edge.
But I'm really curious, and the pre-prod machine could give an indication. If the hinges are good on the preprod, they should be good on the prod machine, if they are bad...well...they
might be fixed before production. But reading the hinge issue thread for the 15" wouldn't make me optimistic.
BTW, all 15" unibody have this issue, but not everyone is bothered by it since majority of users use their laptop as a desktop. It's a desktop laptop, not a lap laptop. They used the same mechanism on MB and MBP. It works well on the MB but not on the MBP because of the heavier screen. Apple has too little incentive to fix this on the 15". But for the 17" they must have used a different mechanism, since the screen is even heavier, also this has been an issue for the old (current) 17" versions. So I'm hopeful with regards to a forced construction change. I can't imagine they could use the same exact hinge on the 17" as well.
Still no one out there with first hand info from touching those things at MW?