UCSB or UCD?

Hi! So, I got into UCSB and UCD and really like both colleges. Even after touring, I don’t know which one is best for me. I’m interested in social psychology, so I applied as a psych major to Davis and a sociology major to SB (they don’t have a psych major anymore). Can anyone tell me about those programs/ life at either school? I want a college with diversity, great faculty, unique opportunities, and a fun, happy community of students. Thank you!