With gloss, you can achieve the sharpest image - obviously depending on your negative. With mat, it depends on the particular finish of the particular paper you use.
The modernists (Adams, Weston, etc.) advocated gloss paper in their turn against the salon pictorialists, so gloss was considered more serious for a while. I personally use Azo, and you can read a great deal about it at michaleandpaula.com.
Today, though, people seem to use what they like. It depends on your photographs and what you want to convey, and how you want to do it. Get some paper, experiment, and go with what you like. I really don't think anyone other than you can tell you what to print on and talking won't take the place of experiment.
As Fred Picker (not a god) constantly said, "Try It."
juan