Doesn't reverse osmosis already give you close to distilled water already? I think it's wise to investigate what type of water you're dealing with (which pollutants to expect) before going all out on an expensive setup. Maybe you can get away with just 1 option.
Remember that reverse osmosis will remove all minerals which means you should consider if you run the risk of deficiencies when drinking large amounts.
Do you re-add minerals in some way?
I have probably one of the best natural sources a man could want so i drink straight from the tap.
But since i'm a coffee snob too i know there are literally packets of minerals you can add to your reverse osmosis or distilled water. For coffee this is important for the taste.
I don't thing it's a big problem to drink water that is devoid of minerals as you can simply add them to your diet through supplementation. I think you could add an electrolyte mixture once or twice a day and be fine as well.
