I recently acquired the Levoit VeSync Core 200S True HEPA Smart Air Purifier and I am very pleased with it. It is a great air purifier that is easy to use and has a lot of features. The air quality sensor is very accurate and the app is easy to use. The air purifier is also very quiet and does a great job of filtering out allergens and pollutants. I would highly recommend this air purifier to anyone looking for a reliable and effective air purifier.