Magnepan MMG, at $500 a pair. MIT Terminator 3 speaker cable closed out at $65/pair in second (or Terminator 2, "for a few dollars more"). Audio Alchemy DLC linestage preamp a close third, at $225 (before they went away). ASC Frescoe Traps in fourth (before they were replaced by something a little bigger and pricier). Kimber 8TC rounds out the top 5, in my opinion (not recommended for systems having even a slightly forward presence region, however. It's a "quickish" sounding copper cable with a large enough cross sectional area to let the dynamic swings of a beefy system come through...lacks tonal refinement of pricier cables, and also that of the much cheaper MIT, in the right system context, of course).
