What speaker cable made a major difference in the sound quality of your speakers??


I am curious what speaker cables made a big "jaw dropping difference" in the sound quality of your current speakers.  What most impressed you about the difference;  that is, overall musicality, tighter, deeper bass, midrange clarity and soundstage depth, etc.etc. 

Keep the price of the speaker cables chosen or auditioned at  between $800- $1000 or  from  $1000-$1500. Was the cable bought new or used??

  Thank you,   SJ

sunnyjim
To your point Edward506, I totally agree with you that room and speakers would be much more important than cabling. Not to belabor the point and I truly am like you, I don't care one way or another what people believe, maybe some can't hear and I respect that view as well.  I used to believe the same until I listened and I could clearly hear differences, ic, remember the first time it happened to this day. Some make more of a difference than others, some make no difference and some make PROFOUND differences. I have several very expensive cables that I no longer use but still like. They have been replaced by a couple pair of home brewed cables with silver and gold wire that are quite special, the wire wasn't cheap either. Also I have coper  ribbons I use for my tt set-up to pre which I prefer over the homebrews in THAT application. Believe me, listening to cables makes you a better listener, but it can take work at times, enjoy!
For me, the Straight Wire Pro Special SC speaker cables in bi-wire configuration is a great match for my speakers (vintage Von Schweikert VR-5 HSE), setup and room.  I believe they run about $10 a foot nowadays, which isn't bad.  I also use Straight Wire Solo interconnects which made a HUGE improvement over the previous interconnects I had used, including the stock interconnects included with the Camak connectors that came with my used vintage Mark Levinson ML-9 amp at Saturday Audio Exchange several years ago.  
You can view my system here:

https://systems.audiogon.com/systems/5523

And you can also view my review of the Straight Wire Pro Special SC speaker cables here:

http://ayllonmedia.com/news/straight-wire-pro-special-speaker-cables-strike-the-right-balance

Cheers,


Juan 
Tellurium Q Ultra Black speaker cables and jumpers ,the impact was huge took my system to a completely differnt leauge.