I spent a lot of time researching air purifiers to decide which would work for my 600 square foot kitchen/living room area. The Alen fit all of my criteria. The clean, minimalist design is a huge bonus, as the idea of looking at a clunky machine in my living room was not at all appealing. I also love that you can easily turn off the button lights if you want the room to be dark - this is a great feature that my other different-brand air purifier doesn't have. The machine, even on its highest setting, is quieter than an oscillating fan. The Alen arrived quickly and was well-packed. Another bonus is that the purifier comes with a filter. Though this seems obvious, many other so-called top brands don't include this. The facts that the Alen includes this filter and comes with free shipping really makes it stand out from the competition.