I an breaking in 2 Sigs after having had the Originals. I will have more to say when I have had more time to listen, but my early impressions are that the Sigs are significantly better, perhaps a 25-30% improvement if I had to quantify. They seem smoother, sweeter and fuller-bodied than the Originals, with no loss of detail but instead greater musical realism. Right now one is on pre, but intend to put one on DAC as well to see how that works.
Neal
Neal