What kind of humidifier works best: an ultrasonic, an evaporative, cool-mist.... I am on Long Island, NY and have a problem with humidity also. I did get a hydrometer and a humidity thing a ma jig that has a sponge in it that I put into a plastic "container" which slides between my strings into my sound hole, but I need to get a room humidifier, too. Thanks. Any thoughts anyone?