On a typical full-motion mount with a 20-inch arm, you will use 3 to 4 feet of cable before even reaching the wall — that is, if it’s properly routed to allow safe movement of the TV on the arm.

The average TV screen is 50 inches ... room instead of on a flat wall. It extends and tilts, mounts on only a single stud with the handy drilling template and has cable-concealing covers.