best air purifiers?

i’ve been researching alot and found that the IQ health pro is one of the best but it doesn’t tell you how much particles it picks up as do other brands, and itnot aham certified you need to know before buying one if it emits ozone which is not good, i found one at frys, called rabbit air pro, and it ranks up there with the IQair purifier, and is cheaper , filters and all.