Review on Vornado PCO575DC Air Purifier: True HEPA & Carbon Filtration for Allergens, Smoke, Odors & Viruses, Whole Room, White by Tim Hollins

I haven't tried the rest, but this is simply the best there is. The multi-filter system collects a lot of "garbage" from the air. I would keep it right above the stairs so it uncovers most of the upstairs, my loft and master bedroom. My wife will use hairspray in the main bathroom, the smell and chemicals make me vomit. How dare I turn on the fan in the bathroom? So I turn up the air purifier and it removes the chemicals from the bedroom. Every time she applies a large amount of hairspray in the bathroom, the air purifier's light, indicating the presence of dirt in the air, turns orange until it turns clear, and then turns green again. You notice it in front of the filter, but the good thing is that it detects things in the air. Cleaning is very easy, I'm too lazy and I'll just vacuum the filters. There are 3 main filters that I vacuum (hose extension), FIRST 2 and 3. never get dirty. It has an automatic feature that typically seems to push the power panel (fan speed) down by about 20%. I always just set it to 70% and just leave it. It's pretty quiet until you crank it up to 90 or 100%, and then it ramps up to clean the dirty air. I feel like the noise is too loud to put in the bedroom according to my wife, but if I put it on a lower setting or on Auto it would probably be fine. Overall it's amazing. and it's worth it. Yes, it helps with allergies and dog stuff. We vacuum dog hair like crazy, but just because it sucks air at all levels, not carpet level, it cleans the air and picks up dog stuff that's flying around, not dog hair on the floor.