Agisthos,
When I initially started testing outlets, I started with the Furutech GTX-D(G) and loved it. I started to compare the other outlets, and always compared them to the gold Furutech. My least favorite were the Oyaide SWO XXX and the Cardas 4181.....though I want to be clear that both were vastly superior to the commercial grade that I had installed initially. I did however give those 2 outlets to friends, who use them to this day.
I kept the two Furutech GTX-D (gold and rhodium), and the Oyaide R1, because they were so close to each other and that they all could have a place in my evolving system. I am building a listening room in my basement that will have 3 dedicated circuits, one each will have the GTX-D(G), GTX-D(R), and Oyaide R1 receptacles. That will give me the chance to further test and use which outlets work with which components.
My thoughts summarized: the Furutech Gold is is aligned with my listening tastes, smooth/engaging/detailed/inviting and an all around great performer with great imaging and soundstage. The Furutech Rhodium is more detailed/revealing/resolving and in my current layout was not as enjoyable as the gold version......though many may prefer that sound. The Oyaide R1 is Platinum plated and is more refined/detailed/resolving than the Furutech gold, but without some of the warmth.....though soundstage was the best of the 3 that I still own. All 3 are superior performers for me, and will be the 3 I use going forward.
Hopefully that gives you some clarity?