I am going to buy my banana plugs today for my speaker wire (buying that too).... my surrounds will be no more than 20 feet from my receiever, so is it okay to just get 12 gauge? The reason I am asking is because a lot of the banana plugs on Radioshacks website are made for 12 gauge wire. If so, which ones do you recommend at their website. I will be picking them up at the store, but still would like to know which kind to get. Why are some a lot more expensive than others? Thanks.