Lived in Black Rock for several years, right on Grovers Avenue. Pros: nice neighborhood feeling, walkable to several bars, restaurants, Harborview Market, the seawall is great for a stroll, living near the water is awesome. Cons: Grovers Avenue was LOUD with unmuffled motorcycle brigades, lots of traffic to/from St. Mary's, and I came out one morning to find my car up on milk crates as my wheels had been stolen. Cops laughed at me when I filed a police report. But rent was much cheaper than even Norwalk, and Black Rock has a good vibe imho.