CPC-600 6 Qt Electric Pressure Cooker vs Nationalpresto Presto Pressure Cooker and Canner 01755: which is safer?

Where these two actually differ

• We flag Silicone sealing ring degradation, Stainless steel corrosion or pitting, Thermal shock or pressure seal failure from improper use and Mineral or food residue buildup on heating element on the Cuisinart 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 Cuisinart.
• The Cuisinart is Stainless steel cooking vessel; sealed electric heating element 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.