hartreefockboi

I'm a bit confused, you got accepted for Chemistry programs, but had a Skype talk with physics prof? Are you doing theory/physical chem? Generally speaking UCSB has a better physics reputation than Yale, but Yale has a better chemistry reputation. In chemical theory particularly, Yale has an amazing reputation, and a couple very very strong professors. Also in terms of living environment UCSB and Yale are polar opposites. UCSB is in the middle of a beach paradise, Yale is in the middle of a cold crime ridden city. Both have their ups and downs, but you should certainly consider environment in your decision, as it will probably have an affect your productivity. That being said, if you've found a lab whose research you find deeply fascinating with a PI you think you'll gel really well with, I'd suggest going with your gut. Otherwise you might always regret what might have been if only you'd have joined that amazing lab.