27oz Wide Water Bottle with Loop Cap vs Water Bottle Insulated Classic Loop Cap: which is safer?

Where these two actually differ

• We flag Nickel leaching from stainless steel, Surface corrosion and pitting over time and Bacterial growth in cap seals on the Klean Kanteen and not on the Klean Kanteen.
• We flag Silicone gasket degradation and odor retention, Plastic cap latch and hinge brittleness and Bacterial or mold growth inside bottle on the Klean Kanteen and not on the Klean Kanteen.
• The Klean Kanteen is 18/8 stainless steel, no interior coating where the Klean Kanteen is Stainless steel body, silicone/plastic components, which is most of the difference in these two grades.
• These two are 5 points apart, close enough that price and fit should decide it rather than our grade.