To give another data point, this exact model--the Honeywell HCM-350--was reviewed by Consumer Reports[1] who rated it the 4th best model of 13 models in their large-room category for humidifiers. (The top three were Boneco 7135, Crane Germ Defense EE-8065, and Honeywell HWM-340.) This is what they said about the Honeywell HCM-350:

"With Excellent ratings for moisture output, convenience, and energy efficiency, this humidifier gets the job done. Excessive noise, often a problem with evaporative models because they use fans to moisten the air, shouldn’t be a major problem. One caution: Its performance using hard water is just average, so anyone with mineral-rich water can do better elsewhere. Plus, this model won’t shut off automatically when the tank is empty. Output 5/5, Convenience 5/5, Noise 4/5, Efficiency 5/5, and Hard water 3/5."

So it seems like a good model among those available. But having used multiple different humidifiers over the years, I hated all of them for one reason or another, and returned or threw them out within days or weeks of purchase. I think that a good humidifier is an unsolved problem. It's probably the same for the author of the article.

[1] Consumer Reports is a decades-old non-profit organization which puts out a magazine (and website) which does unbiased product testing, has zero advertising, pays for all the products they test, never takes sample products, buys all their products anonymously (so they can't be given better samples for testing purposes), and has extensive laboratories, procedures, scientist/technicians for testing (a private track for testing cars, for example). I never heard of anyone claiming that Consumer Reports was fraudulent or pay-for-play.