Dog Watch System is definitely a more advanced and, to a certain degree, more reliable fence system than the standard Invisible System. It relies on an FM signal which is less prone to random static corrections than AM signal most invisible fences have. It also has longer battery life. Dog Watch battery lasts for around two years, while the best invisible pet fence has 6-month battery life. Their receivers are more adjustable, so you can customize them for your dog. Of course, they are more expensive than invisible fences too.