Glossy vs Matte
I looked at two 15" MBPs at the Apple store, side by side, same image, same ambient lighting, etc. I found that the colour saturation appeared deeper on the glossy display, and I could not see any difference in the detail. I did not compare the screens with text, or look at a typical web page.
If I had the choice for my 13" MBP, I would choose what I have -- glossy. I've read that those who are concerned about colour critical work would choose the matte screen. I would expect that they would be mostly working with desk top machines.