Yes I am firmly in the industry and seek truth over sales. I will not violate the free communication of this site to promote my choices. I will share in general however.
Basic start is always purify first. RO and distillation accomplish this if they are of quality. Go with bayonet style filters rather than filter housings. The housings are prone to dirty fingerprints on the filters and grow all kinds of nasties. Distilled water is dead energetically and has little structure and no oxygen. The source water, usually energetically dead, determines what comes out on the product side of the Reverse Osmosis unit.
You then want to energize the somewhat dead water. There are now energy mugs, water catalysts, pendants and the Vitalizer Plus that do this very well. The Vitalizer Plus by Vortex, Inc is the best deal and provides instant resources for the body in non stimulatory energy, hydration and oxygen. It replicates the very things Nature uses to energize and revitalize the water. It is an exceptional value when paired with a Reverse osmosis unit or distiller. You can find combinations for under a thousand dollars, with far greater benefit than the Ellis scam.
Finally, you want the harmonics that bring coherence to water. The coherence, absent in almost all water catalysts and energizing technologies, allows maximum support for adrenal support and restoration as well as virtually 100% hydration inside the cells. That is the primary goal. At 70-100' in depth the ocean has an energy rating using the Bovis scale of 2.7-2.8 million Bovis. Scuba dived in three locations to get this info personally. A year later QuantaWater technology locked in this same (2.76) harmonic range with the highest vibrational harmonics naturally accessed and amplified. When this catalyst is added to any pure water the results are absolutely the very best in all respects. So whether you are forced to purchase pure water, use reverse osmosis or distilled, or even spring water without fluorided, add two ounces of QuantaWater catalyst and you have the best water I have found to date with immediate benefit beyond any other.
The only exceptions would be the highly stimulatory catalyst and waters that hammer the adrenals while spiking your energy, driving you further away from good health while temporarily making you feel better. It is a difficult field to sort through all the rhetoric, however the body can be very forgiving if we stay to the basics. Keep away from fluoride at all costs. It really is nasty.