Dr Browns!! Also Avent. & latch munchkin. My baby choked on the Tommee tippees each time we tried with them. (Yes we were using the correct size nipple flow)
They leaked no matter what I did, apparently other people had the same problem. Kinda difficult, you have to stir the formula instead of shake it, and you can't fill it past the line, plus the nipples were fairly long and my daughter when she was nb would choke. But we used the Tommee Tippee closer to nature set and they were great. my daughter wasn't too picky on bottles but I just really liked them.