Define which is better? UCR has a business program - but to say one is better is not really a reality. Which is better for you? Living in the inland empire or living near the coast in a woodsy community, etc. D1 sports - or whatever UCSC has., etc.
Where will you feel best? That’s the answer.
Also, as I hear horror stories with UC, which will give you better / more affordable (if necessary) access to housing.
I’m assuming UCR but don’t know…