For the price, this is a great little unit for very small spaces such as a closet, small bedroom, small RV, small boat cabin, locker, etc. Don't expect it to bring humidity down fast or keep up with an environment that constantly reintroduces large amounts of moisture. It is a thermoelectric cooling device utilizing a peltier module and cannot compete with a larger, more expensive vapor-cycle refrigeration based dehumidifier. Keep your expectations in check. I purchased it for a small boat cabin to reduce humidity while in storage, and for that I think it's perfect. The collection cup can be easily modified to fit a small drain valve so it wouldn't have to be emptied in my specific application (I'll wait for the warranty to expire of course). The light can be cycled on or off, not sure why others complained about that. The noise level is that of a computer fan, which is exactly what is in it. For me, that means it's very quiet. To each their own. As to longevity, time will tell.I did a test run in the living room and in a small bathroom. In my house, water collection was slow, as anticipated, approximately 1/4 cup in 24 hours. In the bathroom after a shower, it collected about 1 cup of water overnight. Your mileage will vary depending on relative humidity.The one con I can think of is that it cannot be controlled. It's either constantly running or it's off. It will not turn back on in the case of a power outage, so you can't use it on an external humidistat.