Blue Pure 311i Max

I'm unsure about ion concentrations the Blueair produces vs. Winix, so you may or may not notice a difference. For Blueair and Winix, the activated carbon angle is moot. These brands (and most other common consumer-grade purifiers) have far too little activated carbon or other sorbent media by weigh

I just pulled up the 8 reviews on Consumer Reports. If you look at the 8 reviews the ones that are all bad are primarily due to how much they filter on the lowest setting. That's a pretty awful standard to use because some machines have a few levels of fan speeds. Most good reviews have a minimum DB