Hydroponic grown cannabis being better than soil grow is one of the biggest myths. You will be able to pull faster crops, but by no means better. Most connoisseurs prefer soil grown outdoor bud to hydroponic. The complexity of soil medium does seem to give cannabis a bit more earth and natural flavors. But growing hydroponically does not give you any more potency than soil growing. That is much more a matter of genetics and the grower's technique.