Ok these bottles are not cheap to keep trying out what's best.. he is doing well with the formula no spit ups and throw ups he drinks all 3oz but the gas he has is ridiculous. I started out with avent natural bottles and it was bad then I just switched to avent colic and it has been better but he is still too gassy.. anyone had this issue and can advise better ones for the gas.. before I spend $100 and still suffering.. thanks

Update::: I bought the dr browns today and saw a major change just in the first bottle.. he would drink before just sips and would scream.. he drank 1/2 of the bottle straight and it was like a miracle.. I could of cried.. especially after dealing with this for 2 weeks.. I will continue to monitor him every feeding and hopefully this is my answer to my prayers ☺️

Update::

Ok so my baby has been so gassy on similac pro advance.. he is 3 weeks old and at night he has episodes where he screams for hours and all you hear is the gas bubbling in his stomach.. I tried bottle changing 3 times and finally ended with dr brown which I love but realized it is not the bottle because he is still have these episodes.. now I'm desperate and want to try formula changing.. was thinking similac sensitive.. any opinions on it.. not on wic so don't want to waste money...the worst complaining I heard from it that the first ingredient is corn syrup.. please help