Well, I guess that's the problem, not sure what the right stuff is and this is the stuff I found in the electrical section. At Home Depot. I'm not expecting to get a correct answer if I ask about this while I'm there either.
Please do NOT consider any "before" picture of my house as any kind of endorsement of any particular construction method. In fact, you should probably assume that if I post a "before" picture, I am posting it because I am soliciting advice on a proper replacement for one of MANY things done wrong by a previous owner.