I have an early 2008 MBP with matte screen, but had three major repairs so I think if I request a replacement, I will just ask for the glassy model. The glare is annoying at times, but at least you can adjust the angle of the screen pretty easily. Plus, I liked the pictures of the matte unibody 15" I saw on these forums, but in person, it looks ugly to me as opposed to the black border, sharp picture glassy screen.
The antiglare border and dull picture makes me long for a glassy model next time I get a MBP. And this is coming from someone who had a glossy macbook (1st gen) and have had a matte nonunibody mbp for about two years now.