Wondering if anybody else out there has had to make this decision and discussed it with somebody knowledgeable on the subject.
There are advantages to Colombia. It's just a more elite school, better shot at clerkships, easier roads everywhere you go in the future.
Whenever you compare two schools, especially two schools of this caliber, it's easy to lose sight of the bigger picture. The differences between the two academically likely comes down to the individual student. Going to either school won't guarantee you anything. As someone living in the bay area right now, I can assure you that you won't regret choosing Cal. As someone heading off to Columbia... well, I'll say no more.