Bests & Worsts Reviews from Amazon

Love it. I looked at and read reviews on many brands of air purifiers. Each manufacturer had it's own way of presenting the same information- what kind of filters, how small the particles it captures, how much air flow, how big a room it will filter, how noisy or quiet they are, why you can't compare other brands to theirs, do they have wi-fi? Some say they're quiet, but don't list a decibel level. In looking at all the different versions, I realized that it's basically a fan which moves the air through a filter and the filter captures junk from the air. The 3 in one filter is what will take out dust, tiny particles, and smells. So why do some models cost from $100- 600?. I read the reviews for the PureZone 3 in 1 HEPA Air Purifier and was impressed with the following: within the first day of use people noticed breathing improvements, secondly, they described the sound as a pleasant noise. Third, the unit was well designed. I bought it from Amazon and I agree with all of the positive reviews. I woke up feeling less scratchy throat. It is very quiet even on high. It is very well designed and very easy to change the filter. I also love the price. Be careful. Purifiers are kind of like ink-jet printers, they could give them away and still make money off the ink replacements. I saw some units replacement filters cost close to $100. The PureZone replacement filters cost $15 on Amazon. I'm going purchase another one for our living room.