I have experience with some of the earlier AT Silver designs, as well as Gopld and Palladium.
I definitely have nopt heard the latest Silver designs, so take this with that grain of salt. But I thought the silver cable had too much of that "sheen" to it; kind of sibilance in the higher registers than normal vocal "S" sibilance.
That said, it was spacious and detailed.
IMO, though, the Palladium - active or not - is a better sounding cable. A wonderful mix of detail and smoothness. I currently own the Active Palladium.....
Tom @ AT is a very nice giy, if you pop him an email he should be pretty good about responding.
Good luck,
Todd - skullguise