Ok, as most of you know Im the resident cheap skate, so heres the question, what would be the cheapest effective water filtering system that you dont have to replace the filters in all the time? Better yet dose anyone know how to build one yourself? From what Ive heard the Berkeys would be great but I understand they also run like $200+ most of the time. I would like to come up with a means of makeing potable water that dosnt have to have replacement filters but also as cheap as I can get and DIY would be ideal. Any sugestions?