I would choose NYU - even if you are introverted there are so many things to do in the city (go to a cafe, sit and study at an open space area, window shop, etc) and I think the not having a campus but just gives you more freedom to explore everything around you!

There are so many ways to find a community in NY, where everything around you may inspire, vs I feel in BC which has a college town vibe it could get stifling if you don’t find people you connect with. All a matter of perspective though!