Ford vs. Chevy thing for some.
Zareba has been good for us. A lot depends on what type critter(s) you're trying to keep in (or out), power source, weather exposure, terrain, and your budget.
Rule of thumb for the majority of critters is 1 Joule output for every mile of fence. Some critters don't need nearly this much, but overcoming weeds that grow up into the fence, poor ground, and the occasional big, ugly critter makes it a minimum.
For your reading pleasure, here is a good article and review;
LINKEd
