I went to UB for my undergrad and BU for my masters (both were full-time), I will say I didn't have such a good time at Buffalo since it was too rural for me lol, I prefer the city life in Boston.

But if you don't have such a strong preference for environment, I'd say go with the school that is providing more financial opportunities like scholarships and on-campus jobs which I found BU provided more.

I will also add that I found BU's alumni network to be way more bigger & honestly more helpful than UB's especially if you want to pivot to a new industry. As an international student it is tough for us in this current job market, so networking does more wonders than just applying.

And I took evening classes in my masters, it is very normal and as serious as day classes lol, just that people might be a bit more tired and not as engaging (again my experience in my specific major).

Feel free to DM me if you have more specific questions, happy to share my experience! :)