16 oz Smart Tumbler vs 20oz TKWide with Café Cap, Tofu: which is safer?

Where these two actually differ

• We flag Unspecified internal coating degradation, Polymer leachates from seals and lid and Brand transparency and safety accountability on the Ember and not on the Klean Kanteen.
• 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 Ember.
• The Ember is stainless steel with unspecified internal coating/sealant where the Klean Kanteen is Stainless steel bottle, stainless steel cap, which is most of the difference in these two grades.
• The gap is 60 points, wide enough that this is not a close call, and the Klean Kanteen is the one to buy.
• We are less certain about the Ember grade, at 45% confidence against 85%, because it discloses less.