best 100- 200 used interconnect

I want warm in the mids, smooth highs and tight bass with slam. I know this is a tall order but I have to get away from my Nordost Blue Heaven which, despite having a very nice sense of nuance and inner detail, are thin and lightweight.

my system:
Rega CD 2000
Rogue M99 and M120's
Magnepan 1.6QR's

I am trying a pair of the Zero autoformers instead of speaker wire. These match the impedance of the speaker to the amp and should help tubes drive the Maggies. I will report back on these. I expect to replace the Nordost anyway. Someone told me to buy Kimber Hero, any other suggestions?

thanks in advance,
Phil