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

Just got a pair of Triode Wire Labs American Speaker Cables and they really are great. I have a full loom of TWL cables and while they were the last piece, I feel they brought about the biggest improvements in tonal balance, more PRAT, and more depth to the stage

falconquest,

If you've heard and liked what the TWL power cables bring to the table, I think you should give their speaker cables some serious consideration as well. 

@jgoomba5  The TWL Speaker cables really are amazing performers. My favorite TWL cable out of the entire loom. The interconnects sound similar to the speaker cables so if you're in need of interconnects and like the TWL speaker cables, you know what to do :P

@sunnyjim I upgraded from the Tellurium Q Black speaker cables to the TWL American Speaker Cables and I could not be happier. Dramatic improvement in my setup. Granted, it is one step up the price bracket as well but I was expecting to feel the law of diminishing returns kick in. Not at all. Worth every penny. As luck would have it, a friend was using the Tellurium Q Ultra Black speaker cables. Brought my TWL Speaker cables over to his place to do a comparison and both of us handily gave TWL the win. The TQ Ultra Black speaker cables tend to lend a darker sound signature but the TWL has better depth, way more micro detail retrieval, a much more natural tonality and a more balanced presentation throughout the frequency spectrum.