For something a bit different, Mesquite at 3857 Decarie corner NDG offers up your standard breakfast fare but also has dishes with a southwestern or cajun influence (andouille sausauge, brisket'n'eggs) & was surprisingly enjoyable. B&M is just ok & their bacon always tastes like it was made yesterday. If you're into portion size, head to B&M but don't pass up on Mesquite.
B & M is now at Somerled and Grand. Their breakfast is OK, and huge. Benedicts gives you less for your money, but the food is half-decent. Prepare to line up on weekends, though.
There's also cosmos on Sherbrooke, for the greasiest of home fries and monumental portions of meat.