Originally Posted by Bruennis
Original HR-02 and Macho are practically the same minus nickel-plating? Nickel is inferior to copper at heat dissipation
HR-02 has a different mounting mechanism, which is the same as the Silver Arrow and many others, but not the case of the HR-02 Macho.
That mechanism has a pressure vault in the middle of the base that allows you to get much better contact and dissipation.
It makes a noticeable difference in cooling capability, and nickel plating vs no bare copper doesn't make a bit of difference in real life.
It's more expensive and prevents the copper from rusting that's all.
Do some research before posting mate.