I used Dr.Brown milk bottle to feed my bb. I don't think Dr. Brown is good even though my bb doctor recommend. It is always wet my bb clothing. The milk will go out from the cover side. I was so mad for that. However; I got Dr.Brown from friend gift. It has 12 different size bottles. ( from 4 oz to 8 oz ) After then, I match other cover and seems better.
I also tried evenflo and avent, parent choice ( from USA but I think some brand also available in HK ) and I got PUR from friend. It is ok.