The group of four lacked the experience (limited visits to Montreal courses) with Quebec Golf to rank the courses. I'll comment on what I have seen:
Royal Montreal (Blue Course) has been completely redone by Rees Jones so it's a moote point. The Wilson course offered very little inspiration to me personally. Land is very average regardless. Red course is better than Blue.
Mount Bruno, really nice land, great setting with very average architecture. Some great holes with far too many ordinary holes to be great. Worth playing for the setting and ambiance
Laval-sur-le-Lac Green is well worth playing and makes my top 25. Some of the better architecture in places with a few too many average holes to be inthe elite.
Pinegrove: My next visit will take me there, many think it is one of the best.
Royal Ottawa: many excellent holes and well worth playing. The old fashioned architecture is like stepping back in time. With the bunkers returned to Bendelow's trenches as opposed to Watson sprawling disastewrs this club could be really great.
Kanawaki has some of the best holes in Montreal and should be played just to play 9 and 18 alone. Very good course with the flat land holes at the bridge being the weakness.
Beaconsfield may be the best course on the island. The routing of the back nine is outstanding with a number of first class holes. Weaknesses on the front hold the course back and conditioning remains a constant weakness (for some reason).
Elm Ridge is quite good with the North being the stronger of the two. Courses are playable and enjoyable, but offer little in the way of great holes.
Islesmere is the sleeper. The course has a series of outstanding holes throughout a real soilid tract. The weakness is the overgrowth of trees (common Laval problem

)
There are a lot of really solid courses that would appear in mass from 26 to 50; but the province seems to lack the standout that is much better. Again, I have not seen much outside of 1 hour from Montreal.