For breastfed babies I would suggest the Pigeon Peristaltic Nipple.
It is the one that a couple of dieticians have recommended to me when we want to try
I second that! My lactation consultant recommended these one's to me when DD was only 3wks of age and we were having to use bottles at the time for supp feeds..... they are fantastic. (Just wish they were BPA free??)

My LC told me those tommee tipee one's (closer to nature) are not as good as they 'market' themselves to be?!? but I guess everyone has an opinion on everything right?