Petinos is me and my friends favourite place to have brunch! The staff are always great and the service is pretty quick once you're sat down.
Their breakfast food is by far one of the best in Montreal, comparing to other chains like Tutti Frutti, Allo mon coco and Chez Cora. I recommend the Montérégie half waffle with strawberries, English cream and Nutella served with eggs, bacon and potatoes on the side. It also comes with toast and coffee. Their hollandaise sauce is delicious and you can also top it off on your potatoes! The portions are also very generous, so take it easy when ordering. The prices are decent, however, take into account all of the extras you decide to add because it adds up.
The only con would have to be the lineup, especially is you're a group of 5+. Me and my group of friends tend to wait about 20-25mins before getting a table during weekends, but the wait is worth it for the food and the price we pay.