It has been always said that having gold plating on a PCB has lots of advantages. Not only does it give a good clean low resistance contact, but the perfect flat surface. However based on the galvanic series table, gold and tin\lead (or even copper) placed farther apart from each other that leads to corrosion and noise voltage.
if it is true what would be better to take into account first, resistivity or corrosion (also noise voltage)?