Hi S.!
I haven't heard about Babies R Us exchanging them, but I am aware of BPA. There are several websites about this controversy if you google it. My husband and I decided to stay BPA free for our new baby on the way. There are a couple of options:
Dr. Brown has a BPA free bottle
Glass bottles are back on the market
Playtex drop-ins are BPA free
Any of these bottles can be found anywhere!
One thing to keep in mind is that most Americans have not been informed about this dilemma since the FDA will not make a formal decision. I'm sure they are spending tons of money to find out for themselves the answer to the question: Is BPA harmful? Many countries have already banned BPA.
However, most of our plastics are made with BPA. From what I have learned (keep in mind I am no expert!) anything above a level 5 is not good. You can find the level on the bottom inside the recycle triangle. The biggest problem with plastics above level 5 is heating them.
I hope this helps!