Which UC do you think would be right for me (please help me)?

For undergraduate studies, the reputation of the college is far more important than the reputation of your major. This is for two reasons: 1) you are likely to change your major several times before you graduate and going to a reputable college will ensure the education you receive is good overall; 2) once you graduate, depending on the field you get into, people may not care about which major you studied but they are likely to pay attention to which college you attended.