Runner GPS Watch vs Classic Plus Stainless Steel Magnetic Closure WatchBand for Apple Watch: which is safer?

Where these two actually differ

• We flag Silicone band degradation and skin irritation, Plastic case thermal instability and Battery leakage from sealed compartment on the TomTom and not on the X-Doria.
• We flag Nickel leaching from stainless steel on the X-Doria and not on the TomTom.
• The TomTom is Plastic casing, silicone band, electronic components where the X-Doria is Stainless steel, magnetic closure, 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.
• We are less certain about the TomTom grade, at 35% confidence against 82%, because it discloses less.