IMHO the DS cartridges are complexity for the sake of it. It is all electromagnetic energy. The DS cartridge just exchanges some of the weaknesses of MC cartridges for a new set. Remember, it all moves at the speed of light. Light is not easy to contain, it can bend around corners. The shading plate has it's own set of resonances. I prefer to stick with low impedance moving coils and transimpedance phono stages. There are moving coil cartridges that track better and have much lower distortion levels. At 10 kHz the DS Grand Master almost hits 10% and it's tracking is no better than 65 um. Lyra and ortofon cartridges will stomp on it. So why do people like it, two reasons. from 7 kHz the frequency response rises until it is up 4.5 dB at 18 kHz. This is a very bright cartridge which will mesh beautifully with the hearing loss of the older people who can afford to buy it. Next is price. DS audio did everything possible to jack the price as much as possible. The Equalizer and it's power supply are wastefully overbuilt. But, if it costs more it must sound better right?
I remember back in 1984 I was finally earning a living and I wanted a sports car. The new Corvette was getting rave reviews so I got one. It was pure junk. The manual transmission did not belong in a tractor. The top of the dash was styrofoam covered in black plastic. I sold it in two months and got a 300 ZX turbo.