@cwebster My favorite brand has been the Crane humidifiers, I have
the frog one here and another similar one and used them the last few winters. I also got a
Honeywell cool mist awhile back locally as it was a cheap backup, although a smaller water tank (more refills needed) it has been working good too.
If your a diy person the ultrasonic humidifier products from
The House of Hydro are really great and can be done so they do not need to be manually refilled.
I got the
one disc model and it out preforms my other humidifiers due to the larger disc size. The thing that originally sold me on them was they offered replacement disc's (and are even included for free) to keep it going - as eventually depending on the water hardness/minerals/etc they all will go bad and most are not replaceable/repairable. They are listed as foggers too due to the amount of humidity they create, which is easily visible.
The ones to avoid I found are any that use wicks and filters. They do not create much humidity compared to a ultrasonic one (not even close), and the wicks and filters need to be replaced which are often rather expensive. They seem to work purely by wicking the water up near a fan that blows warm room air over it to evaporate the water.
I originally got a older large box humidifier from a family member that knew I was needing a humidifier. I found that thing was huge, noisy, and did little to help the room humidity. Also the replacement wick was $30+ when it went bad, so it was cheaper to buy another and I found the ultrasonic humidifiers thankfully.