Myths:
"Glossy shows truer color."
"Matte shows truer color."
"Glossy has an unbearable viewing angle and reflection."
"Matte is nearly invisible in sunlight."
Facts:
Both type of screen show the same excactness of colors. The glossy layer does not interfere with the colors tone.
As long as you have the brightness at a fair setting, you will not suffer from glare. The only place where I would wish for a matte, is in my car in the afternoon in the summer with bright sunlight, but it I rarely watch a DVD in the car at summertime.
The only true differences are viewing angles and bare looks.
While as the glossy cover will decrese the viewing angle slightly, it is nothing noticeable. I have had 12 persons watch a movie on my MacBook. Works great.
As humans are attracted as many monkeys to shiny things, more people will be impressed by the glossy. It looks brighter and nicer. I would take a glossy since humans by nature plainly think it looks nicer.
Those are facts you'll all find out are true by research and comparison.