I am in the process of readying my old iphones for sale and I noticed that the older plug seems to be a more quality product. I'm just wondering what you guys think...should I keep my old one and include the new one with the old iPhone or is there some benefit to having the new smaller one? The seem like they do basically the same thing but I don't know if one is better to have than the other. The old one also allows for the apple extension plug which I have a few of laying around....