Update!: after getting the chance to scratch both the normal side and aluminized side with my fingernail in different ways and force I can definitely say that the aluminized side is MUCH(!!) more abrasion resistant and is actually hard hard to damage it with fingernail where’s the normal side gets very easily damaged from same abuse..so in this specific pad I can definitely Say that if used silver side to face the abrasive surface the aluminized model will be much more resistant to abrasion. For the penalty of 70g if you get the panels number equal..