I’ve had this fence up on wood posts for over 10 years. It’s very easy to install and tighten. I have my posts set 16’ apart, per Horseguard’s recommendation. I also have only three strands. In the past, I have had to shovel snow away from my bottom strand because it will short out the fence and/or weaken it. I also have some problems with the grounding in the winter when the ground freezes. When I upgrade in the future, I may try their new bi-polar tape.
All that being said, I’ve been extremely happy with this fence overall and I’ve found it to be very easy to install, change, or repair. I’m not sure it would keep dogs out though. My fence charger pulses so it’s kind of the luck of the draw if dogs actually get zapped. My dog has been zapped twice but he doesn’t seem to remember or associate it with the fence. If you want to keep dogs out, you might need to put something else around the bottom.