I'm looking at running some new coax cable for tv connections along with Cat5 to set up a network in my house someday. I've seen regular RG-6 and Quad Shielded RG-6 cable and don't know what the real difference in performance is between them. Do I really need to spend the extra $$$ for Quad Shielded just for satellite tv? Also, are the compression connectors better than the old crimp connectors?