I bought this particular model 3 weeks ago for my bedroom based on lots of research including Consumer Reports' reviews. I live in a very old building, with high ceilings, in an area plagued with occasional brown-outs so I needed a unit that could handle these conditions. So far I'm very pleased with the efficiency of my LG air conditioner. It's a little louder that I expected when it turns itself from "cool" to "fan" and then back again to maintain the set temperature. So I'm using my white noise machine to help mask the change in noise levels. Though it sounds counterintuitive, this setup helps me sleep through the night undisturbed. Other than that, overall, and for the price, I believe I made a wise purchase.