Duo Plus Pressure Cooker vs Nationalpresto Presto Pressure Cooker and Canner 01755: which is safer?

Where these two actually differ

• We flag Aluminum leaching (if inner pot is aluminum) and Coating degradation and unknown coating composition on the Instant Pot and not on the Presto.
• We flag Gasket and sealing material degradation and Stainless steel corrosion and leaching under acidic or salt conditions on the Presto and not on the Instant Pot.
• The Instant Pot is stainless steel body; inner cooking pot coating unspecified where the Presto is stainless steel body; no nonstick coating, 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 Presto is the one to buy.