This is a very broad question to be asking 5 days before you need to SIR. Have you visited any of the schools? If you have read the other threads, can you narrow it down to two schools?
My only suggestion is that, if you are interested in neurology, you might look at Cognitive Science with a neuro emphasis. All of the schools offer cog sci except for UCSB but they recently changed their psych degree to be similar. Also, when we were looking at UCI, they made it very clear that psych and cog sci majors (in social sciences) could not be used as pre-med degrees. You might check to see if that has changed.
UCSD: http://www.cogsci.ucsd.edu/undergraduates/major/neuroscience.html
UCD: https://cogsci.ucdavis.edu/
UCI: https://www.cogsci.uci.edu/undergraduate/bscogsci.php
UCSB (Recently changed their department from Psychology to Psychological and Brain Sciences. They eliminate the BA degree and now only offer BS) https://www.psych.ucsb.edu/undergrad/majors-offered-dept-psychological-brain-sciences