My friend is using Dr. Brown and she said it's good, without any "wind", however, I think it's too expensive la. Dr. Brown has so many different parts and make sterilization difficult. Therefore, I decided to use NUK instead.
I think it also depends whether your baby likes it or not. I have been using it since my Son was born (he is 5 months now) and it's been good. But my friend's son doesn't like it so I think it's not so much about the price..