Here are the official Montreal restaurant guide sites to reference:
http://www.voir.ca/restos/liste.aspxThe Voir is the best Montreal guide in my view, even if they are spotty outside the big cities.
The list: Endless Banquet Montreal food guide - THE place if you want to read up and browse the best restaurants
http://www.martiniboys.com/Montreal/restaurants-in-Montreal An up to date site of Montreal restaurants and hotspots.
http://www.montrealplus.ca/bars_et_restaurants/ An encyclopedia of Mtl restaurants.
http://www.debeur.com/resto1-montreal.html One of Montreal's most trusted guides, very French.
http://www.montrealfood.com/restoa.html Fewer personalized reviews. One of the original Montreal food sites.
A list of all Montreal restaurants from St-Hubert to Toqué with links to their sites, useful for quick basic info.