Gold or Rhodium

Use neither & buy The Missing Link outlets.

I have used both with great sound. The rhodium is somewhat more neutral to my ears. If you are going the GTX route, I would strongly suggest you also purchase the GTX aluminium backplate with 104 D stainless steel/carbon cover plate. This is what I am currently using to feed all of my gear and these have greatly reduce RF/EMI noise whcih has translated in black pitch audio background letting new low level musical details pop up. This was one of the best and most satisfying tweak used in my system. There are a few threads on the Gon on this subject.

I use a GTX-D(g) wpo in my ss system (Vitus/Magico/Jorma). The Magico S5's are already highly resolving and fairly neutral in tonal balance, so I decided on the gold version to add a touch of warmth and body. The general recommendation I received was rhodium was best for tube-based systems, or very warm ss or warm ss rigs where you don't want to 'risk' going any warmer. And gold for neutral to warm ss systems.

Note however, there is NOT a drastic difference between these, despite the plating difference & urban myths doing the rounds on this forum. The major mojo is in the base metal (pure copper), and the slight lean towards warmth vs resolution in the gold vs rhodium (respectively) is more related to a slight 'shade' vs night/day difference.

"Note however, there is NOT a drastic difference between these, despite the plating difference & urban myths doing the rounds on this forum. "

What urban myths are you talking about? Just curious, I've never heard them.

rhodium is much tougher than gold but I would have thought that gold would sound better but we are talking about wall outlets :)