i would say flood n drain system over the sprayers in the vinyl fence posts. i ran ebb n flow for my first hydro run, and it was much easier than the sprayers.. a few things i found of advantage were, not as many waterings per day, easier access to roots, roots have something to grow into, and it ensures darkness to the roots in turn eliminating risk of algae growth.
The vinyl fence posts with sprayers wasnt as good, i found too many light/water leaks. and it has to spray a couple of times an hour at least. wastes water.