I've bought one from gamemat.eu and I've been very happy with my purchase. It's made of mousemat material and is both very good looking, heavy and can take a beating.
We've played X-wing on it on a weekly basis for at least 1,5 years now, and it still looks as new. I also occasionally take it with me for away-games, rolled up in a transport tube (I've got an extending plastic one with a strap from my art academy days) and it stands that handling perfectly too. Rolls out flat with no curling corners at all every time.
This is the one I have.And here's a picture of it in action:
