I have always heard that it is very important to have the braided copper shield that RG59 has versus the aluminum foil shield that RG6 has. I don't have a technical explanation, but have been warned in several training classes that I have attended on the subject. I have never tried the RG6, wondered why, but never decided to take a chance on it.FYI, I ended up buying RG6QS instead of RG59, since technically I can't find a reason why RG59 is better for CCTV. Home Depot sells 500' RG6QS for around $65, while Lowes sells 250' for around $59. HD no longer carries Paladin (they have a deal with Klein now, which isn't a bad brand, just expensive), so I just bought a cheap $14 IDEAL compression crimper (haven't tried it yet).