Furutech IEC inlets, Cables and GTX-D

I've just gotten a few of the Furutech IEC inlets, which I put on one of my mono amps - the top of the inlet broke off on one amp. I hooked it up when I got home (had to have my repair guy do it), and played a mono recording on one speaker. Then switched the speaker cable to the other amp (with a regular inlet). Pretty noticeable difference! Clearer sound, more focused without thinning out the body of instruments and especially female R&B 60s singer voices (where you can tell instantly if it's better or worse: the "soul" disappears from their singing. Irma Thomas should never, EVER, sound bland. Just Black! Got 'em for $27.99/each. Bought two, so now I can do the other amp.

Has anyone tried any of their speaker cables/interconnects? HP was impressed last year,when he said they were as good as - if not better than - the Nordost Tyr.
I bought the Furutech 104D outlet cover, too. To make this post short, it was obviously superior to the FIM outlet cover and of course, the ordinary wall cover. Ordered another one tonight. Next up? The Furutech GTX-D receptacle. Has nobody tried this because of the price??