Which company should I choose: Azimo or UBS?

Hey,

I have done an internship in finance at ABB and now have to pick between Azimo and UBS for a second internship.
Which company should I choose?

Azimo people seem really friendly and I like the things that I would be working with, but UBS seems to be more recognizable company.
It really got me thinking in terms of future prospects, I'm not sure if I should go with UBS just because it's a huge company and will serve as a big name in my CV, or I should go with Azimo. Both companies seemed really great during my interviews and their offers are quite similar (except for the money, UBS pays more, but that is not the case).
Internship in Azimo would be in finance and in UBS it would be in banking operations.
What would you suggest? Have you worked for one of these companies and want to share your thoughts?
Any hints or advices would be appreciated!