Interconnect recomendations, ~$500 new or used, RCA...

"Best bang for the Buck."  "Giant killers."

Specifying my equipment is pointless because nobody else has my ears and my sensibility.

I'm interested in hearing only from people who have auditioned a great many different interconnects...

Of course there's no "absolute" best. I'm not even asking for "best," just recommendations. There are way too many choices, yet certain ones will float to the top time and time again across many systems. And if "odd man out" cables get multiple votes, they will be considered as well. Audtioning is de rigueur, so is narrowing the field. Give people some credit: we don't always need to "taught a lesson."

In my specified price range I'm researching Harmonic Technology, Analysis Plus, Siltech, Nordost, Synergistic Research, Cerious, Triode Wire Labs and Black Cat...

jtcf ... Thanks for your input. Notwithstanding the issue of system synergy, I find such comments helpful in sorting the possibilities. Regarding Analysis Plus copper... did you mean the Copper Oval In or the Solo Crystal (or both)? In your experience, how do AP and Harminic Tech differ in being dark and rick, viz. air, detail, soundstage, tonal accuracy, etc.? Rich is what I'm looking for, without draping a false harmonic blanket over everything, and, of course, as glare free as digitally possible...

Wywires Blue has been the big surprise thus far: dynamic, detailed, open, and natural, altogether better in my system than either Cardas Parsec or Cygnus, Analysis Plus Copper, or  Acoustic Zem matrix II.

Great clarity!

The Wireworld  Electra 7 power cords are impressive at their price point, very quiet and dynamic.

CEC TL-51 belt drive redbook transport to a Synergistic Research Resolution Reference Active digital cable feeding a MHDT Orchid tube dac using NOS Western Electric 396a triodes and a HifiTuning Supreme Cu fuse, Exposure 2010S integrated amp with a HifiTuning Supreme Cu fuse to Analysis Plus Ovel 9 speaker cables feeding Merlin Audio MMI bookshelf speakers with Master RC Network and Cardas jumpers. From an audiophile power outlet with a single High Fidelity Cables MC-0.5 power conditioner installed, a Virtual Dynamics David power cable (soon to be replaced with a Shunyata NR V-10) feeding a PS Audio Juicebar with Audience p.c.s to everythin else.  Audioning interconnects between dac and amp. 

PS. The Exposure integrated has a passive preamp section, yet is a satisfyingly dynamic amplifie. Great prat and naturalness. Not a detail monster, however (I find too much detail distracting and annoying). The MHDT Orchid dac, utilizing the legendary Philips 1541 chip, is R2R and  also very natural sounding. .