Lol Morristown is pretty chill too if that's the vibe you're after. I saw you're in IT, there's a huge IT bubble in the Morristown/Parsippany area of NJ. A lot of banks have offices there. Another good area is Princeton, with a great downtown and IT roles supporting big pharma.

Upper Montclair definitely fits the bill for being able to walk around and feel safe. Although these days downtown JC is pretty fun if you're young and enjoy the night life.