Mini Chef Series 4QT Multi-Cooker vs Nationalpresto Presto Pressure Cooker and Canner 01755: which is safer?

Where these two actually differ

• We flag Sealing ring degradation and odor absorption, Stainless steel surface pitting and corrosion, Pressure release valve clogging and Thermal injury from steam or pressure release 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 pot/bowl, no nonstick coating disclosed where the Presto is stainless steel body; no nonstick coating, which is most of the difference in these two grades.
• These two are level, close enough that price and fit should decide it rather than our grade.