I recently purchased the BreastFlow by First Years for my 3 wk son. He seemed to drink pretty well from them, but the flow was too fast and the nipples seem to collapse. It was kind of a pain to squeeze the nipple to get the milk back into the bottle.
My friends told me about the Dr. Brown bottles and showed me the nipple flow. I bought some based on my friends recommendation and have fell in love with the bottles. My son drinks slower, has less gas, and does not spit up as much. I would highly recommend these bottles to anyone who breastfeeds and pumps, or breast and formula feed. My son did not realize he was full for 10-15 minutes after using the BreastFlow bottles, with the Dr. Brown's (because of the slower flow nipples that simulate the actual breast flow speed) my son realizes he is full soon after his feeding.
Definately worth the money, wish I would have known about the differences in the compared products nipple flow and I wouldn't have wasted my money on the BreastFlow bottles.
The only downside to the Dr. Brown bottles is that it is more time consuming to wash the bottles because of the extra pieces, but that is minor compared to the satisfaction my son receives from each feeding due to the nipple flow and decreased air intake.