Which one is good for a BBA: Manipal University (Jaipur) or Amity University (Noida)?

Amity University, Noida.
Though I have not visited both the colleges and have no idea how the course structure of both the colleges is, I would recommend you to join Amity because of its brand value. And oh, they have a huge huge campus with almost every facility which a BBA student requires.
I was about to join that college but then decided to stay back in Hyderabad itself.
Do your research before joining. Hope this helps.