Am looking at having an electric fence installed around our property.

Any advice on specs, etc so I don't get BS'd by those quoting ?

Our property boundery is 50% pallisade fencing ( and drive gate ), the rest is pre-cast concrete walls. On the pre-cast side, 60% is on a slope, with a drop in height of about 1,5 panels for each horizontal panel.

So what should I be looking for ?
Best way to connect the drive gate to the rest of the fence ?
Thickness / quality of wire, insulators, posts, etc ?
Battery backup ? Specs of 'controller' ?

Totally clueless at the moment, so need to be educated by those of you in the know.