I am using NUK bottle + chu chu tit for 10 months. So far so good.
The chu chu tit in brown is very soft. Good for new born baby but it becomes sticky very soon (need to change less than 1 month). I changed all tits to white color when my baby was 2 months old.
My B has used Dr. Brown for a year. But I want to change to some other bottles now because the Dr. Brown bottles have too many parts (the air vent).
I tried Chu Chu, but it seems that it takes longer time for my B to finish his milk. Or sometimes he just can't finish the whole bottle as before because it takes too long time. He used Level 3 奶咀 of Dr. Brown. Since Chu Chu is a free flow 奶咀, it is very good that the milk will not be leaking out. However, it seems that BB has to use much more effort to suck the milk out. Any method to make the chuchu 奶咀 easier to drink???