Wait a minute. RR posted a link to the GT Audioworks video from Capfest 2019. I just happened to be in the room when that was made late on Sunday afternoon, sitting right behind the camera guy. There was no metallic anything. That system sounded amazing and was completely in control. It pressurized what was probably a 50ft wide, 40ft deep, 10-12ft tall room with zero strain or glare. Don't judge a system by what you heard on YouTube. Honestly, I don't know why people do that with their products. GTA is a small company like Danny's and did have an issue once when at RMAF getting into a smallish room with unfamiliar vendors. That happens. I'm sure Danny has regretted sharing a room with someone whose equipment didn't do his speakers justice.
Are the Super 7 better than the GTA? I don't know, but I'm sure they're different. I can tell you that GTA system, at that show, was outstanding. Far more coherent, natural, dynamic, and transparent than systems across the atrium that were 4x the cost.
The Kingsound King III model is electrostatic, not planer magnetic, and does sound wonderful.