Stainless Steel Insulated Tumbler with Lid and Straw vs 20oz TKWide with Café Cap, Tofu: which is safer?

Where these two actually differ

• We flag Plastic lid and straw degradation under heat and Lid seal material and mold/bacterial growth if not dried on the CUPKIN 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 CUPKIN.
• The CUPKIN is stainless steel body, standard plastic lid and straw where the Klean Kanteen is Stainless steel bottle, stainless steel cap, which is most of the difference in these two grades.