The 300S really is an excellent humidifier and a great value; my only disappointment is it isn't quite as easy to clean as advertised, as there are parts of the humidifier than remain inaccessible (and have pink mold on them) that drive me a little nuts.This thing really packs a punch for humidification - on a high setting, it can really humidify a space significantly. It's even set off my daughter's smoke alarm because of how misty it made the room, ha. It also holds more water than it looks - I live in a very dry climate and on a relatively high setting (target 54% RH in our roughly 15-20% RH home) we get two full nights out of it.The only disappointment has been the cleaning - I read many reviews before purchasing saying how easy it is to clean, how accessible everything is, etc. etc. and all I can say is there must be some really hard to clean humidifiers out there if this is one of the easiest. I've included a photo of its condition after more than 2 years of use, and you can see there is some mineral buildup at the black seal in the base and around the bottom of the mist tube, but, I also don't bother with distilled water and supplement with little 'cleaning fish' (https://a.co/d/6TQEFNb) to help with mineral buildup. So after two years, it's not terrible and mostly on me for not wanting to buy distilled water ;) My real beef is with the mist tube - there's an impossibly narrow and distant part near the base and I have yet to find a cleaning brush narrow and long enough to clean the pink mold out that forms between the tube and its little insert. I've honestly considered buying a waterpik just to 'powerwash' the thing; my kitchen faucet sprayer on max isn't strong enough to blast it off. There aren't many parts to take apart when cleaning but I actually wish it broke down into more so I could access that thing.The other trouble with cleaning is - at least per the instructions - you do a 15-minute soak with 3 cups or vinegar, and then a second 15-minute soak for two small pieces that you just soaked already. So if you're following the instructions, you're married to a 30 minute+ cleaning session. I generally do the first soak, then dump the same vinegar back into the measuring cup with the two small pieces in it, and start cleaning the tank and base while those sit there. I rarely have the patience to wait out the next 15 minutes, but it's still about a 25+ minute job in the end. I use a baby brush and the longest, narrowest wire brush I can find in addition to the small 'looped' brush to clean all the nooks and crannies. Keeping gallons of vinegar stocked for this is a bit of a bummer too.Now all that said - per above this thing REALLY works, which is huge. It's also got just about any feature a person would want out of a humidifier - it has Bluetooth capability with an app but you can also work the intuitive controls without one. You can add essential oils in a little absorbent pad that lives in a small 'drawer' if that's your thing. It's got an optional timer, an optional nightlight, low/medium/high and auto mode and you can set the desired %RH with an app. I believe the hygrometer is on the bottom, so if you've just cleaned it and it gets wet it may be a little out of whack that night. And it's surprisingly quiet.Even if this cost a lot more it would still be an excellent value - my cleaning neuroses aside, it's an excellent appliance and has lasted us three years and still works great, despite my not using any distilled water. Just be prepared for the cleaning. ;)