When selecting grad programs, is PI fit the most important factor?
I'm a prospective PhD student in the biological sciences and I need to choose between two programs. I'm struggling to prioritize the most important factors to guide the decision.
Program A has the best fit location both geographically and also in terms of the lab environment (new, clean, natural light). It also has the best fit as far as faculty, lab group size, and the vibe/values of the department. However the PI is a hot mess, and seems to be very disorganized. His students are jaded and they shared with me that he has dropped the ball on important things more than once. I am a very disciplined and organized person, and I struggle to work with others who don't have it together, especially when that person is my boss.
Program B has a very organized and on the ball PI who would be a great fit in terms of both mentorship and working style. However, the geographic location is an awful fit for me and the lab environment is grim (think leaky, isolated, dark, etc). There also aren't as many faculty who align with my research interests. This option does come with better access to resources and has slightly better funding, though.
Can a good mentor outweigh the rest? Or, conversely, can a great location and department outweigh the frustrations of working with a mentor who needs to be managed by their students?