Playtex Ventaire Advanced Wide Baby Bottle Review

I am a first time Mom and I thought the Playtex Ventaire Advanced bottles looked like they would be a good bottle.  They stated that it would prevent gas and spitting up because of the air that was able to flow through so I thought I'd give it a try.  Well, I have to say that my son, who is now almost 7 months old, has not spit up very much.  I do believe it is because of these bottles, because when we tried a different one, he spit up.  So in that area, these bottles are great.  The only annoyance about these bottles is that they leak.  There is a plastic ring you put in the bottom of the bottle and sometimes, I believe when the formula is warmed, that seems to get loosened and you end up with a lot of formula on your lap.  It would leak in our bottle warmer, so that is why I think it happens when the formula gets warm.  My husband and I just warm up the formula in a different bottle and then pour it into Playtex one .  We also make sure the plastic ring and the bottom of the bottle are completely dry before putting them together-and while it takes more work to wash more bottles and dry them really well, we think it's definately worth it because he doesn't spit up!  So if you don't mind a little extra washing, I'd buy them!