I happen to know about Clair through a free shipping campaign. Clair Air Purifiers focus only on two products, which seems to plain but a precise choice for customers who are strict about design and functionality. I purchased Clair TD1866, though delivery took nearly 2 weeks, the product itself is perfect. Amount of dust covering up on appliances and other stuffs' surfaces, is reduced significantly. It runs quietly and the filters are easy to replace.
The website is informative, simple-to-use, online-support available.