I have friends who use more expensive models (2-3x the price) that work no better than this one. It is easy to use and takes up little more counter space than a Keurig coffee maker. It will distill one gallon of water in 2 hours or less. I used a dissolved solids meter to measure the purity and it went from 250 ppm tap water to 3 ppm after one run. If you are a purist and want 0 ppm, you will need to double run each batch, which I don't think is worth it, but that's just me. The directions are skimpy, but you don't have to be a rocket scientist to figure out how to use it. It is amazing how much crap it removes from the water. You will need to scour out the reservoir periodically, but it is stainless steel and cleans easily enough. It's a best buy.