so far I have been going to my local water supply for my RO water. It is taking to much time and effort and I would really like to have more control over my water and not trust the local store. I looked at some of the RO systems online. does anyone have any advise as to which unit may be better than the next. im not looking for more than 50 gallons a day I will not even be using that much. Is the three chamber system enough filtration for saltwater systems? any information will help. thanks