there is no best. your est will be based on your personal abilities/limits.
the ability to control your space will be a major player in your choices.
Without a chiller for example an under current would fail for you, but yet its still the
most productive system I've run in any controlled space.
pr mix/happy frog/fox farms, hand water, organic fertilizer is my suggestion.
a low profile big foot flood and drain system is a blast for hydro