Your choice depends on your preferences. Watermart Reverse Osmosis Systems are popular because they effectively remove contaminants from drinking water, including heavy metals, salts, and inorganic compounds like arsenic and cyanide. The process uses a semi-permeable membrane and pressure, along with carbon filters for chlorine, chloramines, and organic compounds like pesticides and pharmaceuticals. Some people add a remineralization filter for alkaline pH.
On the other hand, many people prefer keeping the minerals and opt for a Watermart Multi-Stage Filtration System, which is similar to reverse osmosis but without the membrane. It uses sediment filtration and carbon adsorption to address most of the same contaminants while preserving minerals.