4 and a half stars
I think 4 and half would be accurate.What you need to know is that all the companies put out their own comparisons - it is annoying. Multipure claims that Aquasana does not filter out a bunch of stuff - that seems to be reported incorrectly. I give minor props to Aquasana for not attacking the competitor.The real skinny is that Aquasana had problemw with their casing and the faucet leaking over time. Both seem to be resolved. Over time (I have used AQ for about 5 years) whenever I had a problem I called support and they sent me a replacement immediately at no charge with no hassle. Even when they changed the faucet type for the undersink style, they sent me all the new stuff no charge. As much as a hassle as it was to replace the stuff it wss done immediately no questions.PS the water tastes great.