I would like to add a reverse osmosis system to our kitchen sink. I currently boil all of our water before drinking because I want it to be more pure than the city water we get. I don't want to drink the bottled stuff because of its questionable quality, horrible effect on the environment, leaching plastic, and waste of money. I've just started researching osmosis attachments and there's such a wide price range that I'm having a hard time deciphering the importance of the differences among them. I want to spend under $200. Does anyone have suggestions about pros/cons of any models?

Thank you!