I'll put away my Blueair 680i Classic with a CADR of 934 m^3/hr (550 CFM) before it hurts Dyson's feelings. Someone could buy 3 211+'s rather than a 680i, but t

I'll put away my Blueair 680i Classic with a CADR of 934 m^3/hr (550 CFM) before it hurts Dyson's feelings. Someone could buy 3 211+'s rather than a 680i, but they'd take up 3x the volume, use more electricity, cause more noise (although the 680i is moderately loud on speed 3), have more filters to buy (3x $80 vs. 1x $105), and not integrate with smart home platforms (if you don't need this, the 605 is basically the same as the 680i). For 700 sq ft / 65 m^2 areas, the 680i is the better deal and filters better than the 211+. I put a couple of logging Plantower PMS5003 + Arduinos on top of mine and relocated around to confirm, and found it was producing air below detectable levels of PM1.0, PM2.5, and PM10.0. IOW, damn clean air. Maybe not viruses or all bacteria, but it will filter out essentially all fungi.