We use it constantly. after using it awhile I became very sensitive to the smell of water directly out of the tap and noticed that smell was gone after filtering in the Aqua Tru. Now I use the filtered water for brushing my teeth too. The only thing that comes to mind about improving it would be that it doesn't hold enough water and I do spend a lot of time refilling and rinsing it out. Also at first I added water to the tank without throwing out the leftover water. So it appears we need to remember that adding fresh water to the tank needs to happen after throwing out the old water left in the tank.
The taste after filtration is excellent. My son noted the better quality immediately. Now he brings bottles to my house for refills. Balancing: I try to reuse the quart & half of "waste" water for house plants and rinsing as much as possible, as it bothers me to see it disappear down the drain. And yes I have recommended AquaTru