Many of the schools previously mentioned are not in New England. Union is excellent but it is in NY and the city of Schenectady does not even have a little bit of New England vibe. St. Lawrence is more preppy but way, way up in the northern border of NY (practically Canada) and could have a little more of a New England vibe when the leaves are in fall colors.
Back to New England…
Bentley
Babson
Quinnipiac
UNH (Paul school of business is highly regarded)