re: In-Ground fence system vs Wireless system for dog-Help me decide

I've got the DogWatch buried wire in our yard. We have a lake in the backyard that our dog wants to swim in all the time.

Since installing the fence a couple of years ago, she knows exactly where she can and cannot go. Even playing fetch she won't go near boundaries if her ball goes across. She'll stop and wait. Even without the collar on.

When we go for a walk out the front of the house she'll stop where the boundary is (again without her DogWatch collar) and wait for me to pick her up over the boundary (she's a 45-lb lab-mix).

Best money I've ever spent on my dog.