I tried to search "Bisphenol A" on internet and found some useful information. After I read it...... then I changed all my bottles.
Believe it or not, it is your choice. I have some friends, they are still using their PC bottles for very long time.
i use avent (it is pc bottle) after i hear that pc plastic can release bad chemical everytime heated i changed all the bottles to ppsu (chuchu) & pes (bfree) i still have not decide which one is better
don't think that it is a waste of money if u change all the bottles, just think everytime your b is using pc bottles, he/she is drinking bad chemical into stomach which can cause serious damage when grow up.
Personally I will choose Chu Chu PPSU (I have used it since my BB born and he is now 7 mths)....so far very good. It's orginally made in Japan.
I also heard about B-Free, but I personally dislike it's design (too big) and too many parts like straw..I like simple design!!
the only problem i have w/chuchu bottles is that the bottle opening is small. i have to be very careful when put milk powder in..... & it's harder to tell the temperature (i have to guess)