Hello,
                    I received my Halo as a Christmas gift from my mother this year. I love this air purifier so much. It takes out smells (I live in a big city so that's amazing) and I notice the difference from when I don't use it. I do wish when I press and hold the power button that a light would flash to show me that the machine recognized it was replaced and that it went longer than the 8 hrs, but other than that I love it. I also would've liked for the instructions to be more clear. It makes it seem as though all you have to do is turn it on and not take the plastic out of the filter. Those are three very small things and I still am very satisfied with this product.