based on wirecutter's own test results a few years ago, the blue air 211+ air purifier had the best performance by a good margin, but they wouldn't recommend it

based on wirecutter's own test results a few years ago, the blue air 211+ air purifier had the best performance by a good margin, but they wouldn't recommend it, for at least 2 years after i bought it, though they later did so, briefly. this was likely to maximize their revenue rather than provide the best recommendation. hard to trust them after that.