Maestro vs. Furutech GTX-D Gold AC Outlets

Hi

Am considering the 2 outlets Maestro and Furutech GTX-D Gold. I realise the Furutech costs substantially more. I will be plugging a Krell FPB power amp and into one outlet of the duplex and an Oyaide MTB 6 with SWO DX Ultimo outlets into the other. Power cords are Triode Wire Labs.

At the moment I am using regular UK outlets with a Wireworld Aurora 5.2 into the Oyaide MTB-6 as the Wireworld is the only cable I have with a UK plug.

I am generally happy with the sound except for some sibilance in the leading edge of notes and would like a full bodied, organic sound which is NOT slow, thick or bloated. Treble extension is sufficient at the moment. I don't know how much of this sibilance is due to the Wireworld cable as that is probably the weakest link and I have no means of testing that. I gather so far based on reading that the GTX-D is a fuller sounding cable and the Maestro is more neutral - that's all I have found.

I am not much of a power tweaker and hopefully will only do this once.

Your experience with these outlets much appreciated.

Thanks