I am planning to install a Butternut HF-9V vertical in my back yard. I have a 500 ft. spool of #14 THHN that I plan to make my radials from. I've heard and read various arguments for and against insulated or bare wire for radials. I'd like to use the insulated wire I have, but if it will make an appreciable difference, I'm not against buying a spool of bare wire. Anyone care to offer an opinion on insulated v. bare radial wire?