Playtex Ventaire Advanced Wide Baby Bottle Review

my poor baby had a rough start, and after having to discontinue breast feeding and go to formula i went through a number of different bottles before chosing playtex ventaire advanced. the little guy was a huge spitter and very very gassy all the time, even after being burped a dozen times following a feeding and several times during. after switching to the playtex ventaire advanced bottle the gas and spit was greatly reduced. the bottles are bpa free and come in clear bottles with pleasant pastel colored rings. the bottle features a vent system bottom which is a silicone part inside a ring with holes that screws on the bottom to allow the air to escape the bottle so baby swallows less air. all the parts can be easily removed for washing. the bottles are also angled and come in standard or wide. the wide is supposed to be for babies transitioning from breast. the only problem i did have with the bottles is the numbers for the ounce markings started to wash off with frequent washing. i called the playtex company, and they were great. they sent me a replacement pack of 3 bottles in a larger volume, and 3 coupons for 7.99 off to replace the total 6 bottles i had purchased. they also recommended i get the "crystal clear" bottles and advised that the etching in the bottle was deeper and the markings should not wash off. i've been using the bottles for 4 months now baby is almost 5 months old. at this point i will not try anything else as these are working well for him and i plan to continue using them until the spitting movement has ended!