Best Water Purifiers

I would like to purchase a good quality countertop water distiller, without spending much money if possible. I also care about the ease of maintenence and cleaning. I want to use about two gallons of water per day, perhaps three, and to be able to keep it clean without much work. Also I need something that won’t break down and will last at least one year. Any suggestions appreciated as to the type to get. I would like to avoid the cheapest models or ones that can break soon or not provide truly distilled, quality water. The healthiest and cleanest water is my first concern.