I thought I would share my experience with these banana plugs. I like these because the boots cover all the area we do not want exposed, 2 screws hold the wire, I am sure they also work with 12 gauge wire despite best buy's information on their site.
I like these to dress up the installation and prevent damage to the wire, if we connect and disconnect them all the time. They will work with most amplifiers that have a set screw for the speaker terminals, and they are inexpensive.
2 pairs are included (4 plugs, 2 red and 2 black boots) for the price.
Dynex Speaker Wire Banana Plugs DX-AV290 - Best Buy