I have used the PetSafe brand sold at CT for both my wired and wireless systems.
Both worked great, had technical support by phone when needed and could order parts on Amazon.
I buried the wires just about 1 inch in a square shovel trench. Simply pushed it in the slot and compacted by stomping.
In a cedar edge, I just weaved it around the trunks and in a fenced part I zip tied it to the top row of the fence.
I had one break in the loop a couple years ago and it was mice that ate the wire were it was not buried. Very simple fix.
If you have a big enough yard you can deal with both negatives that were mentionned above.
- Having a 2 acres yard, I dont fear my dog will be cornered as there is ample room for him to run, plus he can always retreat into my garage that has a doggy door for him.
- By running the wire only in the back-yard, if the dog was to escape (which happened a few times until I got the 'stubborn' collar) he simply returned to the front porch, which is not in the wired section. Therefore no correction for coming back home.