Byron 2.0 Stainless Steel Travel Mug Snapseal vs 20oz TKWide with Café Cap, Tofu: which is safer?

Where these two actually differ

• We flag Silicone gasket degradation, Thermal stress cracking and Lid seal failure and contamination on the Contigo 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 Contigo.
• The Contigo is Stainless steel, silicone gasket where the Klean Kanteen is Stainless steel bottle, stainless steel cap, which is most of the difference in these two grades.