Montreal bagels, I think, are the best-designed bagels. Thinner and sweeter (it is made with honey) than NY bagels, their carb-y, chewy goodness is a lighter option.
Both originated in Poland, but from different parts of the nation. In Yiddish, beygel means ring: these ring-shaped breads are easy to string on a pole or with a string, as many Jewish vendors did.
As members of the Montreal Jewish community left for other Canadian cities, Montreal-style bagel shops also began to spread. However, the two most famous shops remain in Montreal. Whenever you meet a Montrealer, you can ask if they are team St-Viateur or Fairmount!