So with my son I always used DR. Brown..even though cleaning it with that damn middle piece was annoying, it was seriously great my son wouldn't even switch to any other bottle and when I did I had to just buy the nipple dr brown and put it on a regular bottle when I switched him to cow milk at 1 .. so now with my daughter I was going to try another bottle, avent?? Have any mommies used it and how did they like it??