<p>I am in a similar situation with you (with all these schools as my options) except I’m a freshman applicant and not a transfer applicant. Pre-med at UCB is very cutthroat and difficult to achieve a high GPA (solely based off that I would eliminate UCB). Med school admissions are all about high gpa + high MCAT, and the prestige of your undergraduate school is rarely taken into consideration. The only time when it COULD be taken into consideration is comparing a student with the exact same MCATs, extra-currics, but one has a 3.7 GPA at UCB and the other a 3.7 GPA at UCD (then they will probably take the UCB student), BUT most of the times a 3.7-4.0 GPA at a less prestigious school will ALWAYS be taken over a lower GPA at a more prestigious school. The next thing to consider is you should go to a college that has a med school (and a hospital on campus for the purposes of finding internships, etc.). UCSD, UCLA, and UC Davis all have that so all of those 3 would be okay in those terms. Next look at location, social life, etc. UCSD is known to be more boring, and cutthroat (I eliminated UCSD because many of my friends there HATE it). So I would narrow it down to UCLA and UC Davis (I’m deciding between the two myself). While both are great schools, I ultimately will end up going with UC Davis over UCLA because it’s easier to maintain a high gpa, while studying for MCATs and doing my extra-currics! It’s a tough decision though. But based off many med school admission officers have told me about the importance of a high GPA and high MCAT, UCD makes the most sense. So if you ask me, GO WITH UC DAVIS!</p>