I'm not worried. Either way I guarantee there is no difference in audio quality. The cable is almost exactly the same price. I have no need to go under 12AWG.
Duffinator: Thanks for replying. I saw your post as I was searching through it, you just never mentioned which size techflex you used. I'm guessing the round Belkin cable is a little thicker than the Sound King wire, so if it fits on the Belkin cable, I'm sure it will be fine on the Sound King.
BlueJeansCable.com has some bannana plug (no picture yet) that they describe as "fastens to wire using set screws; wire must be "doubled back" before insertion in plug body; "locking" collar tightens plug to binding post" I'm guessing this locking collar are much like the Cobalt ones that you used Duffinator. These go for $5.25 a pair.
Maybe I'll try those out, but I'll probally just stick with one order to Parts Express. Thanks for your help.