Airmega 100

It is very quiet and has a nice simple design. I am going to have to trust that my house air is great since no other level has been identified by the purifier, whcih seems unlikely that there isnt some dust in the air, as i do live in Colorado.

I'm in love so far! Helps with reducing my allergies to our kitten, has reduced the amount of dust settling on furniture, detects smoke and sprays and I love to watch it switch colors in an instant to show it's working! I bought 3 of these and 1 of the larger ones when they were on sale for Black Friday and I'm so glad I did!

Great purifier, made a noticeable difference in air quality primarily in pet dander and odor. Used mainly in bedroom but also helps relieve living room of cooking smells during frying. Seriously quiet too, very surprised by that.