Glossy paper will result in prints that appear "sharper" than matte surface paper.

And at the risk of repeating myself, here is a re-post of something I've posted earlier about sharpness:

For some musings on "sharpness", see post #28 on this thread: http://www.apug.org/forums/forum37/1...ta-3200-a.html

Here is a direct link: www.apug.org/forums/viewpost.php?p=1426106