I've had the Quadlink 5C (started with Twinlink) and really enjoyed them-especially the midrange; then, I stepped up to the Nordost Hemidall...wow, crazy resolution..!! Then, I stepped up to the Nordost Frey....wow, more crazy resolution and awesome bass..!!
The Frey were the first cable I've owned that really felt complete to me. I've had the Audience AU24s (interconnect) too; and, although they are slightly more transparent that the Frey, I find them a little lean in comparison.
Staying within your budget, I'd suggest a used pair of Heimdalls or even a pair of Red Dawns might cut it for you (not going to be any leaner than the Quadlink-in my experience).
What kind of SPEAKER cable are you using?
The Frey were the first cable I've owned that really felt complete to me. I've had the Audience AU24s (interconnect) too; and, although they are slightly more transparent that the Frey, I find them a little lean in comparison.
Staying within your budget, I'd suggest a used pair of Heimdalls or even a pair of Red Dawns might cut it for you (not going to be any leaner than the Quadlink-in my experience).
What kind of SPEAKER cable are you using?