Have been accepted to both with reasonable stipends, albeit a slightly higher one at Stanford. I've lived in LA all my life and am getting my bachelors from UCLA, so going to CalTech is the easy option (staying close to family and friends). I wouldn't be opposed to moving, and my significant other has already agreed to move. Both have many professors I am interested in working with, but I felt I got to interact more personally with the professors at Stanford. CalTech set up short group interviews so I don't feel I got to really asses them as PI's, which is why I'm going to meet with more faculty soon.
Stanfords Biophysics program is part of the umbrella Biosciences program, so I'd be allowed to work with any faculty I wanted as long as they had space. Everyone at CalTech has already assured me getting your choice of PI isn't a problem, and they don't have quals! However, there are proposals and I would be required to TA, unlike at Stanford. Stanford would also allow me to take classes in the business, law, and design schools if I wanted. I have a feeling I'd like to stay in academia, but I like to have those options in case things change. They also seem to have far more resources for graduate students in general.
Since these are pretty similar opportunities, does anyone have any tips/advice/opinions on either of these programs or the schools in general? They're both ranked fairly high, but does anyone know if one is more well-regarded than the other? I've heard differing opinions.