If you’re in Brooklyn, some good options are Bagel Hole (2 stores, one on Coney Island Ave. between J & K, and one on Ave J and E. 15 St.), and Brooklyn Bagels on Nostrand Ave. between Kings Highway and Ave P.
In Teaneck, Sammy’s makes the best bagels. Poppy’s makes ok bagels, not as good as Sammy’s, but they have better breakfast specials (and have hash browns, which is one of my favorites!)