The older, cheaper Trimetal has been replaced by the newer, more expensive T-metal. I guess there's probably more gold in the wires.
I've sold my old X Trimetal to @linux4ever who paired it with his H8.2, and the good news is, he reports it as a great combo. The bad news is you can't really get that cable new anymore.
That's very true. I'm unfortunately not aware of any other cable in PlusSound's line-up that would pair as well with the H8.2 as the Ares II does.