I just bought the  PUR flavor options faucet.  It's easy to hook up and it has the 3 stage filter which is great.  I just love that I can add as little or as much more flavor to the water that I want without adding calories.  I can also just use it without the flavoring.  I don't like the taste of plain water.  The filter does do a great job filtering so that helps but the raspberry flavoring helps me to drink more water throughout the day. It's the best.  It is a bit pricey but it pays for itself if you were one to go buy bottled water and if you were one to buy flavored bottled water...