I used my LP12 with its origonal Valhalla AC supply, then added an Origin Live DC motor kit. Probably marginally better, BUT don't forget DC motors are noisy, you can hear the brushes even on the best. I have moved on to an Origin Live Resolution/Illustrious, which I have no plans to change. It uses OL's best motor the 200 series and Ultra power supply. The sound is wonderful, but the deck was built for DC supply. As Raul points out, some decks are built with DC in mind others AC. It aint what you do, but the way that you do it. Ultimately it depends on the skill, care and material content of the design. I dont think one is intrinsically better than the other.
By the way, I can still just hear the motor with the current turntable, with the best motor Origin Live have.
By the way, I can still just hear the motor with the current turntable, with the best motor Origin Live have.