Cabledyne is what I have been using since August last year. Very high build quality and reasonable prices. Excellent open and neutral sound.
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?
Thanks everyone for the great recommendations. Lots of good candidates, including several I didn't know about before.
For now I've ordered a pair of Morrow Audio MA3. He's running a 25% off sale currently so they're squraely within my budget, and with the positive feedback and 60-day trial I figure they're worth a listen.
I put eveything else that was suggested into a list for the time being, while I wait to see if the MA3s pan out.
Mjmch - You asked about speaker cable - I've got Kimber 8VS now. My plan is to start with the ICs and see how far that gets me, then possibly change out the speaker cables if I still want to tweak the sound a bit further. Ideas welcome of course!
Thanks again to all.