I too am using Soundking 12gauge wire in my system. I terminated the wire with Dayton Audio banana plugs. They are easy to use and everything sounds great. And they are fairly inexpensive. At partsexpress.com you can pick up a four pack (two black/two red) for only $6.95.

Enjoy!

Onkyo797
M22 mains
VP50 center (looking to upgrade)
Mission 77DS surrounds
older Infinity sub
Acoustic Research interconnects