I have never really got on with Rhodium plugs myself although I understand the properties are useful (durable/resistance of oxidation etc).
I think Cpk has it right and it is the wire connecting between that is as important. I think you should try to stick to the same metal through the chain as much as you can.
While I have furutech plugs, in my set up the Oyaide plugs seem to have the edge. A little more solid through the mid and bass.
I use gold over copper (Furutech F1 25 gold series/Oyaide P079/C079) as it seems to let a little more richness through.
I think Cpk has it right and it is the wire connecting between that is as important. I think you should try to stick to the same metal through the chain as much as you can.
While I have furutech plugs, in my set up the Oyaide plugs seem to have the edge. A little more solid through the mid and bass.
I use gold over copper (Furutech F1 25 gold series/Oyaide P079/C079) as it seems to let a little more richness through.