The Only Issue I have had with my new 17" is that either side of the screen, the metal is not finished perfectly, and has a sharp edge, that leaves marks at the edge, infront of the keyboard when it is closed. The marks do rub off, but if you were to leave it unprotected for too long, I'm sure it would be permanent.
It's fine when it's just closed normally, it only happens when I put it into it's sleeve in another bag, where it gets squeezed a little.
No biggie though, just got to find a couple of bobbles to stick on somewhere.