If you spend 600 on that piece of trash then you are a moron. Most "high end: air purifiers are no better than a cheap $99 regular hepa filters and many are actually worse. They are rated by air flow and that is a scam because then the companies just put a powerful fan inside and blow as much air as possible. This has zero correlation to air cleaning. Also there are many scams and gimmicks like air washing and other BS.
You are welcome for this advice. This is by far the best air purifier in the world. I have 3 of these around my house.
Amazon.com - HealthPro Plus Air Purifier - Hepa Filter Air Purifiers