7 Cup Countertop Water Filter Pitcher NSF Certified vs Culligan 12-Cup Water Filter Pitcher with ZeroWater Technology: which is safer?

Where these two actually differ

• We flag Bacterial growth in filter cartridge and pitcher reservoir, Housing and seal degradation over time and Contaminant concentration if filter is oversaturated on the Aqua Crest and not on the ZeroWater.
• We flag Bacterial growth in reservoir if filter unmaintained or water stored too long, Filter cartridge degradation and particle escape if overfilled or misseated and Ion-exchange resin saturation without visible warning on the ZeroWater and not on the Aqua Crest.
• The Aqua Crest is Plastic pitcher body with activated carbon filter cartridge where the ZeroWater is Activated carbon and ion-exchange resin filter media, which is most of the difference in these two grades.
• These two are level, close enough that price and fit should decide it rather than our grade.