Distille water is pretty much the purest water you can buy, and thats not a good thing. Distilled water has been turned into steam and the H2O molecules are then cooled back into water. There are no traces of metals, minerals, or salts. Distilled water is so pure that whatever it is poured into or even if it is aerated, it starts to absorb everything around it. I personally would not use distilled water without aerating it for a while and hope that you dont have anything negative in your air around you. Just use ro/di.
By the way, distilled water is more expensive than just ro water so, i dont see why you would use distilled.