UCSB vs UCR vs CSULB

Hello everyone! I was recently waitlisted to my top choice of college, UCI, and so I have narrowed my list down to UCSB, UCR, CSULB.

UCSB for pre-Biology ($14,500 net cost)
UCR for Cell, Molecular, and Development ($15,000 net cost)
CSULB for pre-Biology (?, have not received the FA package)

I am pre-med and therefore planning to got to medical school after graduating. But I am not sure which school would be the best for my plans for applying to grad school in California because it is such a competitive field. Which would provide better research opportunities, would have a better major program, and which is more likely to get me into medical school?

(Also is there grade inflation/deflation in either UCs? Where would it be more difficult to get a higher GPA?)

Thanks!