I highly recommend Hugh O'Donnell and Justin Duffy. My roommates and I looked at a lot of apartments with a lot of agents before finding Hugh and Justin at an open house representing the apartment we ultimately signed for. They struck a good balance of professional and friendly. They answered our questions about the apartment well, and when we decided to apply for the apartment, they helped us through the process quickly to help us secure the apartment. While we decided not to look at any other apartments with them after they showed us the first one, they were available and offered to show us a handful of other suitable apartments, some of which we had seen earlier on StreetEasy, and some listings that were exclusive with them, which looked like good options if we had decided to continue looking. I had a good experience going through the process with Hugh and Justin and I recommend working with them.