I recently purchased 2 of the Breathe Smart Fit50 models. I was nervous about spending so much money for them; concerned with warranty, quality etc. I have to say, I received them within a few days, they work GREAT and, I love the company is reachable by phone to answer questions (the customer service is excellent). Since using my air purifiers, I have noticed a good reduction in my allergies, I am very happy with this product and the company Alen. I highly recommend them and I will use them again in the future!