ucsd or ucsb

I am trying to decide between UCSB and UCSD. I have visited both campuses twice and I still can’t decide. I think both schools have really good academics, I’m more concerned with the social scene. I am relatively shy and quiet so I feel like I would be intimidated by the social scene at ucsb. However, if people are more extroverted at ucsb maybe I’ll have an easier time making friends?