Used to have what PaintHorseMares had, but Candy runs through it. And now I have a nice fence! Casey would stay in anything, I have had one strand of electric fall down and she stayed in it. She doesn't even need electric, just a strand of rope at 2 feet.
We want to fence the rest of the property similar to our paddock, which has no climb fence with boards and a strand of electric.
We're planning on wood posts, no climb fence and flex-rail on the top. I really like the no climb so they can't stick their heads through and other animals will have trouble getting in (in my case, I worry about coy dogs)