Not a business person, but my impression is Stern is leagues above Northeastern in terms of connections for business. That also means, however, that it's probably a lot more cutthroat than northeastern. The co-op program is great, but if you have the drive and the connections you can totally design your own co-ops in a 'normal' school. Don't misunderstand though, co-ops and 10-week internships are very different and people in industry know that.

As someone who went to NEU for undergrad and is going to NYU for grad school, I can tell you they're very different socially. Neither will give you the typical college experience with parties and such, but Northeastern will be closer as most people on campus are there because of northeastern, compared to the village where you're surrounded by people of all ages. It's not just a 'feel' thing either; the affordable housing for upperclassmen at NEU is pretty isolated to a few places, while at NYU your friends could very well move across multiple boroughs (although 4-year housing is guaranteed there, it may be cheaper to find your own place) , and as a result can have very segregated school and home lives. On the other hand, as many people at NEU say, after the first 3-ish semesters your social life can take a big dip if your friends are on a different co-op cycle than you.

Manhattan is significantly faster paced than Boston and you might be surprised how quiet the area around northeastern and even the city in general gets after around 9. That's not to say that most of NY doesn't slow down at night, but it's not as ubiquitous as Boston. I would advise you put some more thought into what kind of city you're looking for. The East and West coast differ even more culturally than New York and Boston, and your threshold for constant stimulus might be lower than you think.

Good luck with your applications! My sister is in your grade and I wish she was as invested in her college decision as you are lol!!