Personalized Ember Tumbler - Slate Black / 16 oz vs 20oz TKWide with Café Cap, Tofu: which is safer?

Where these two actually differ

• We flag Internal coating leaching or degradation, Coating adhesion and microparticle shedding, Thermal conductivity mismatch and heat exposure and PFAS in coating formulation 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 body, proprietary internal coating 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.