botchki,
I guess I still need a little more convincing.

I tagged a used pair of Live V4s. If those are convincing enough, I'll springboard up to the V5s, which is well in excess of anything I've ever spent on a cable. It'd be a much easier buy for me if they came up used, but Zcables come up as often as blue moons as far as I've seen, so it looks like I have to go new for the V5.
I've been comparing a bunch of high end silver interconnects lately, and while I believe I have one favorite among the batch, I'm just not convinced it's THE one for my system. Zcable's description on their cables make the Live sound like it might be the one, as far as the direction I'm chasing in now. As you say, the search for the perfect sound never ends.

Will revive this thread with results in a week or two.