Dr. Brown's Natural Flow Baby Bottle Review

After having tried a couple different kinds of bottles I decided to spend the extra money and give the famed Dr. Brown bottles a try.
After reading several reviews praising these bottles up and down I purchased the newborn starter set and a set of 3 8 oz BPA free bottles on Amazon.com. (free shipping)
Well my baby didn't seem to like these any better or worse than he liked any of the other bottles I had tried.
I have a somewhat difficult time cleaning the yellow air flow insert also. There really isn't anything made to get in all of the cracks and crevices of it. You have to be extremely diligent to rinse these right after use because mold will grow.
Mine have leaked a few times, but it even comes with the disclaimer that it may leak because of the air flow system which comes in at the nipple collar. Its nothing drastic though. 
Considering the expense of the bottles as a whole, I expected my baby to have little to no gas. He still has the exact amount that he had with plain old $0.99 Gerber bottles.