FreeSip Sway Stainless Steel vs Insulated Tumbler with Lid and Straw: which is safer?

Where these two actually differ

• We flag Silicone and plastic lid/valve leachables, Bacterial growth in valve mechanism and Off-gassing or odor transfer on the Owala and not on the Simple Modern.
• We flag Plastic lid and straw degradation, Bacterial growth in straw and threads and Lid seal failure and leaching from failed seal on the Simple Modern and not on the Owala.
• The Owala is Stainless steel body, no interior coating disclosed where the Simple Modern is Stainless steel, plastic lid and straw, which is most of the difference in these two grades.