I have been running a Gary Koh-type burner rig for about a year. In my mind, there is no doubt the discs are better sounding. Other systems and their owners have sided with me on this. Mr. Koh's Melody discs are not available in the US, though I've had good luck with Mitsui Golds and Memorex Blacks.
Recently, I burned 5 well-recorded discs and sent them, along with the originals, to Mr. Louis. George copied my originals to the same type of blanks, using his process, listened, took notes, then sent all of it back to me.
So now, I have 5 originals, 5 copies the Gary Koh way, 5 copies the George Louis way, and George also sent me 5 of his Onix black discs to burn my way to compare. Whew!
I haven't had time to compare yet. I'll definitely get around to it this weekend and report back. With the toil it took to get the dedicated burner together, I'm leaning toward RealityCheck as a better answer for most people. It's plug-and-play after all.
For now, I'll just say Georges discs sound very good indeed. I'll need to spend some more time before I'll go further.
