20oz TKWide with Café Cap, Tofu vs Stainless Steel Vacuum Insulated Tumbler 0.72L: which is safer?

Where these two actually differ

• We flag Powder-coat cap degradation over time, Bacterial biofilm in cap threads and seals and Thermal stress on seals at extreme temperatures on the Klean Kanteen and not on the Zojirushi.
• We flag Stainless steel corrosion and nickel leaching, Gasket and cap material degradation and Thermal shock and double-wall separation on the Zojirushi and not on the Klean Kanteen.
• The Klean Kanteen is Stainless steel bottle, stainless steel cap where the Zojirushi is Stainless steel with vacuum insulation, which is most of the difference in these two grades.
• The gap is 25 points, wide enough that this is not a close call, and the Klean Kanteen is the one to buy.