I don't know how they compare to other Montgomery County purveyors, but these are the best bagels I've found in DC or NoVa. I'm not sure anything else is close. Coatings cover both bottom and top halves, so you avoid a half-sesame, half plain bagel when you slice them. Their garlic bagel is truly garlicky.
As a bonus, they offer mini-bagels as well as full size. The also carry quite a few flavors of cream cheese, chopped liver, and two types of pickled herring. Since I work nearby, this could seriously improve my quality of life.
Near Connecticut and S Sts, NW.