Hi Daniel, If you are happy with the higher initial cost, the https://www.youtube.com/watch?v=-WFe-mWEKM4&t=27s&pp=ygUVVml0YWwgMTAwUyBIb3VzZWZyZXNo would give you better performance at lower fan speeds than the A231 and also provide app support, which the Winix model doesn't. We will be providing more detail from our testing data that we will be rolling out across the site in the next few weeks, which should make these types of comparisons easier.