I've used Apples since 1984, just sent an 854-page book to press on one <
http://www.GuideToGettingItOn.com > and won't be using anything else.
However, when I was at the Apple dealer yesterday, I opened two identical Word docs and put them side by side on a C2D 15" MBP with a matte display. I actually needed to move my head in order to see the doc on the right side of the display as brightly as the one on the left. There was a 20" ACD three inches above the MBP. It was hooked up to the MBP as an aux display. So I pushed the two docs up on it, and had no such problem. I didn't need to move my head to see both with equal brightness, even though the screen was several inches wider.
I'm not sure if this is a problem with backlighting or a very limited viewing angle, but it was a big enough annoyance that I wouldn't want that display machine if it was given to me. Of course, the salesperson, who didn't know the difference between a Core Duo and Core 2 Duo, assured me there was nothing wrong with the display. Good luck trying to return a machine to him.
I'd really like to get a new laptop now, but will now hold out to see if they try something new with their displays after they release Leopard.