im thinking of getting a copper or stainless steel 510 heat sink... To prevent scratches on mod and keep it cooler... Anyone know which one is better at keeping heat away from the mod ? I assume its stainless steel, since i believe copper conducts heat much better than ss, then another question is whats the point of a copper heat sink if you want the heat to stay with the atty or dissipiate thru the fins and not transfer faster to the mod