Pros: Quiet, starts up quickly, humidifier tank is easy to fill. And, unlike the high-priced competitor it replaced, it does NOT smell strongly of hot electronics or scorched plastic. The lower price point is a plus.
Cons: Humidifier tank is a pain to put in place and remove. It's easier to unplug the whole machine and carry it to the sink to empty it for cleaning the tank (which, admittedly, leaves the edges that are in contact with the machine uncleaned, but life is too short to spend it wrestling with a badly-designed latch).
No ultra-fine filter for allergies. I've been accustomed to that nice feature with prior higher-priced machines.