Bubbling buckets is by far the easiest hydroponic setup, and I believe that hydroponics yeild better and faster. I don't know much about hydroponics and cannabis, but as far as what I have seen and done, its true. Here is a picture of my hydro-sunflower compared to my other sunflowers and herbs (all planted at the same time).

First picture is 8 days into hydro. Second hydro plant now, third is my soil plants with excelect nutrients. The soil is about half as tall as the hydro and the hydro has massive roots/stems.