We recently bought the giant one with the ridiculously high CADR. They removed the air quality sensor (covid parts shortage?), so there's no auto mode for that model, at least. :-(

It's noisier than expected, but on low it's quiet enough and fine for our entire house during "normal" bad pollution days (PM 2.5 between 100 and 300). During severe smoke from wildfires (PM 2.5 > 300), I'm OK with it being noisy.