Bests & Worsts Reviews from Amazon

I purchased this unit after doing TONS of research and upon the recommendation of a major consumer testing and reporting magazine. My first impression of the unit was that it was way too big to fit unobtrusively in my living room; however, because the air is pulled in through the front grill and discharged from the top of the unit, I was able to push the purifier up against the wall to save space. The controls are simple to use. I find there to be plenty of options for fan speed (noise control). On the lowest setting I can watch TV at normal volume levels with the unit sitting three feet from me. After leaving the room it's easy to ratchet it up to the TURBO mode which I leave it on most of the time when not using the living areas. I appreciate the indicators which tell you when the filter needs replacing, and roughly where it is at in terms of its lifespan (there are five lights to represent HEPA and pre filter status). I also appreciate the 5 year limited warranty that comes with the unit (see brochure for details). After 2.5 months of use I find that there is a noticeable difference in the quality of the air. It feels fresher, smells cleaner, and I can't see dust flying through the air (which was a usual occurrence before the filter). At first I was hesitant to spend so much on a purifier which required an on-going investment each year; however, after spending 2.5 months with the first unit I'm going to order a 2nd unit for my bedroom. I don't have allergies, but feel that the investment is well worth the reduced dusting, potential health benefits, and quality construction of the unit itself. UPDATE #1: After nearly 3 years both of my units are still going strong. After many button presses the plastic on the control panel of the unit has bubbled up in certain places. Somewhat unattractive but not so noticeable that it makes me unhappy. I still highly recommend this product and would purchase again for my self (and still continue to recommend to others). UPDATE #2: All of my family's units (including my two) are still going strong. My oldest unit is just over 4 years old now. I have a friend that bought the model which has the fancy sensor which automatically adjusts fan speeds. While I like the slightly smaller and boxy look of the unit slightly more, it doesn't have as high a capacity. Also, it seems to me that the sensor is kind of pointless since I leave my units on TURBO speed most of the time I'm not home to maximize the air purification. Still happy that I purchased these and glad to see that filter prices haven't gone up in 4 years.