I'm just wondering why everyone is on the ro/di bandwagon and not distilled. The distilled counter top unit is a bit expensive at $200 and slow as it takes 4 or 5 hrs to get a gallon but you don't have 100g of waste water. You just need a big barrel and time to fill it and keep it full. Is there a difference? I'm asking because I live in a small town in Ms and there is no ro/di just distilled at walmart for 87c a gallon. I run 3 tanks an 8, a 10 and a 13 so I about 10g a week in wc's. I haven't gotten a unit yet I really want to know about options.