Vocals and instruments were pinpointed better and sounded like they were coming from places in between the speakers instead of directly from the speakers. The soundstage certainly improved. The thing is, I can't even really recommend you try a certain brand. It's all a matter of taste. Your own components are also going to play a role in the sound.
Some wires sound different with different equipment.
It's all a gamble. I'm planning on trying some expensive 99.9 percent pure silver speaker wires soon because I have heard they bring out the best in my own new speakers. Right now, I have my power amps and my CD player all hooked to my pre amp with Kimber PBJ cable, and I have Kimber 4tc going to my speakers. It sounded muddy and less articulate. I was certainly getting a stronger signal with the Kimber.