Only just seen this post. My immediate reaction to the original question was, "What is the local style?" It irritates me when people move into an area and start fixing up their grounds with whatever style they had in their last spot - irrespective of whether it fits in or conflicts with the local style. Hants-style low white-painted rails look great around Hampshire gardens, but stick out like a sore thumb in northern Cumbria, for instance.
And I really get upset when people buy wooden field gates on what they think looks pretty without any recognition of the local style. (Probably mainly because I love the distinctive and unusual - as well as very practical - Exmoor gate, and fretted to see so many boring old diamond-pattern gates getting put up in the area.)
So first off, what's the local style? If that's random or something that won't work for you, then choose the one
you like the most, silly!
And for fox deterrence - can you run electric along it at 3", 7" and near the top?