Funny you mentioned the Xhadow XLR. I actually bought them after buying the cheap plugs from AliExpress. The cheap plugs were EIZZ. There is also another legitimate company that makes screw type XLR Plugs- ETI. The Xhadow XLR are really amazing! I was worried about the silver plating, because it has a tendency to sound bright and strident, but much to my amazement, they did not sound that way.
One of the reasons I got the Sonarquest plugs, was that it was unplated, and therefore removed that variable from the equation. As I said before, they sound amazing. I am also surprised that a power plug can make that much of a difference, and I am even more surprised hearing people say that the PLATING on a power plug makes a difference! However, I do believe it, because I have heard it myself, after being very skeptical. The Sonarquest plugs were an experiment to see if I heard a difference between power plugs, and at $11/each, if I didn't hear a difference, it's not like I threw away a ton of money.
One of the reasons I got the Sonarquest plugs, was that it was unplated, and therefore removed that variable from the equation. As I said before, they sound amazing. I am also surprised that a power plug can make that much of a difference, and I am even more surprised hearing people say that the PLATING on a power plug makes a difference! However, I do believe it, because I have heard it myself, after being very skeptical. The Sonarquest plugs were an experiment to see if I heard a difference between power plugs, and at $11/each, if I didn't hear a difference, it's not like I threw away a ton of money.