I've used Evon anti-colic bottles for both my kids - it is great that I can interchange the teats, handles, etc with other products. The anti-colic system must work as I never had any problems with colic! Very easy to use and clean.
This bottle is very good to clean I have been using some other bottles before that was very hard to get to all the sides of the bottle but the design of this bottle give the ability to reach all the sides of the bottle and give it a good clean.
After long time of changing the nipples and bottles, I found Evon is the best as it's prices are not expensive due to the good quality that it has. I recommended Evon to all mothers around me.