I am currently using a twisted pair Duelund 12 ga. for my speaker cable with Kle banana plugs. Was using them without connectors, but for switching components I decided to add the connectors with no sound degradation. Previously, I had been using Acoustic Zen Satori cables and had A/B'd them with the Clear Day cables. There wasn't enough of a change to go with the Clear Day cables and I like the Duelund best of all.
I am also using the Audio Arts signature power cables with my components. I bought these on a special some time ago and they were a good value. I did a comparison with a $1,000 Shunyata PC. There was a minor difference in the "flavor" but for at least double the price it was easy to stay with the Audio Arts cable.
I have some good things about the Oyaide interconnects buy I have not tried them. I am currently using some older Harmonic Technology Magic cables with no desire to change.