3M Aqua-Pure AP802B Whole House Filter Housing vs Whole House Water Filter System: which is safer?

Where these two actually differ

• We flag Bacterial growth in spent cartridges, Polypropylene stress fractures under thermal or pressure stress and Cartridge bypass or seal degradation on the Aqua Pure and not on the Culligan.
• We flag Plastic housing leachables, Ion-exchange resin shedding, Bacterial regrowth in filter media and Contaminant breakthrough if filter is undersized or clogged on the Culligan and not on the Aqua Pure.
• The Aqua Pure is polypropylene filter housing, carbon/sediment cartridge where the Culligan is Activated carbon and ion-exchange resin filter media; plastic/polymer housing, 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.