Glass. I only had one glass bottle break, and it was my dog's fault. It was kind of a freak thing, actually. I bought these silicone covers to put on them (less then a dollar each), and they never broke when I dropped, or my son threw them. I used the Evenflo classic bottles. $6.00 for three of them!
BPA is not safe. There are many MANY studies now, that clearly link BPA to many problems. I don't believe in the "we're all just fine" theory. Simply because, we are not. There is more cancer, more autism, more chronic diseases, more of everything. People are LESS healthy in our generation, then the generation before. Our children's generation is the FIRST that aren't expected to outlive their parents. It's not all bad eating habits, either. Something is causing all this, and I have to believe all the added chemicals and hormones (BPA mimics hormones) adds to the problems. To me, it's common sense. They are artificial chemicals and hormones. Our body doesn't know what to do with them. Why do we even need studies to tell us that's bad?
Anyway, I doubt you would even be able to find a bottle made with BPA now. Just about every other country has banned it's use, (Of course.) and most companies do not make them with BPA. They do substitute other chemicals, though. Not much research has been put into them, so who knows if those are safe!!