My baby is not the picky sort but it still drinking very happy and well out of this bottle. Much air is not swallowed up by my baby and that's nice. The vacuum cleaner is very soft and flexible. Optical fits the bottle for boys as well as girls is suitable.
The assembly is very easy and. Drops is doing nothing. Is cleaned in the sterilizer, and that works very well.
Value for money is top. Compatible milk pump or the like I do not have and can not say anything.