I have a Megahome water distiller that I have used for about 9 months. I bought it because we go through distilled water like crazy. I have to use DW for my husband's respiratory equipment (ventilator, humidification chambers, etc.), and I use it for soap and occasionally for lotion. It has worked well with no problems, and I don't have to carry all that water home from the store. I re-use the gallon jugs that I had on hand previously from buying DW. There is a disposable charcoal filter that comes with this distiller, but I don't use it. It doesn't serve any particular purpose, and it is just an additional expense. Distilled water does not need to be filtered. All the mess that is in the water is in the bottom of the distiller when it completes its job. I do have to clean this sediment up with citric acid when it becomes difficult to wash it out. I don't have to do that very often since I don't have hard water. People who have hard water must clean the distiller with citric acid more often. It is also helpful to run a short cycle and leave some water in the bottom of the distiller if your water is very hard. It leaves enough water in the bottom of the distiller that the sediment does not dry out and stick to the bottom of the distiller. It was expensive, but it has already paid for itself at my house.