They’re all residential colleges, so the experience isn’t that different in the end except for when it comes to the urban setting of BU and Northeastern. More of daily life will involve the city rather than campus itself for those two compared to UMass. Depends what you prefer. Northeastern has a bit more of a traditional campus while BU is more NYU-style integration into the city. UMass is your classic more isolated college town experience where social life revolves around campus.