We bought the Honeywell HCM-6013i cool mist humidifier to replace a GermGuardin humidifier that stopped working after 90 days of use. So far, this unit is performing quite well.
According to the specification in the owner's manual, this unit is capable of outputting 11 gallons per day (I'm assuming per 24 hours). Do not confuse this with the unit's water holding capacity. In two separate tanks, the humidifier holds about a total of 3.5 gallons of water. And you will not notice any humidifying mist as you might with other types of humidifier. This humidifier works by the same principle as a swamp cooler.
I usually have the fan speed on low and the humidity level set on auto at 35%. At these settings, I have to fill the water tanks every one and a half day or so. The HCM-6013i built-in hygrometer (humidity sensor) is no where near accurate. Although I have the unit set on 35%, actual humidity measured by a separate and more accurate hygrometer, measures 45%. I recommend buying a separate hygrometer so that you can find the right humidity level. If you're not as picky as I am, you can always go by feel and adjust the humidity control up or down until you find your comfort level, to where the unit turn on or off based on the setting.
This unit fits together from essentially four pieces; the base, the motor housing, and the two water tanks. The pieces do not exactly fit together that well. The design of this unit reminds me of something that was made from the former USSR. It's clunky...but it works. It has no problem keeping up the desired humidity level when the AC is on and the outside relative humidity is 10% - 15%. It draws water from one of the two tanks at a time. When either one of the water tank is drained the unit makes a buzzing noise from the empty lighter tank. It's a little annoying, but a little tab or jolt usually resolves this buzzing noise.
I recommend buying a spare HC-14 replacement filter for this unit. I already notice that within a day if not hours of use the water-wicking filter mentioned was turning a little brown on the top. I don't know if the browning of the filter is due to using tap water for the humidifier or the air in my condo is that dirty. I hope it's the former rather than the latter.
The manual states that using tap water is OK because the water-wicking filter will absorb and retain the minerals in tap water, while the Protec water cleaning cartridge will help fight bacteria and other microbes in the water.
As mentioned above. This humidifier works about the same way as a swamp cooler. In a dry and warm environment, this humidifier does put out a noticeably cool breeze.
This product also boasts of having an "Air Washing Technology", and an independently controlled air ionizer. I can't comment too much about these features because I can't attest to how well they work. Again some swamp coolers can also claim of being able to wash the air as they cool...right? My gut feeling tells me that these features are a bit gimmicky. Does it really "clean" the air in my condo? Maybe. Does the air in my condo really need cleaning? Sometimes.
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Unlike the other commenter, mine works, but it makes so much noise when it is running. I've had other warm mist humidifiers that make a nice "white noise" gurgling sound, but this one pops, hisses, sounds like an old Model-T from cartoons. Much too noisy to sleep with in the same room. 
