I added central humidification about 10 years ago. Fantastic. Totally worth the money. No water level to moitor, change elements once a year, and it only takes a day to alter humidity levels in the whole house.
Before that, we went through a series of little junky 2-3 gallon units, then we bought one of those big “console” units. The console actually worked pretty well once you got it up and running for a week or so. Problem was that it takes up space, and it’s actually kind of loud so you have to put it in a place where the noise of it kicking on/off isn’t an issue.
Grouse