Think of it this way, all seeds have a certain genetic potential. If you grow in dirt you only get some of that potential, if you grow in a soiless medium you maximize (based on current science) that potential. Bagseed grown as hydro will taste better and get you higher than it would coming from the commercial growers. I wouldn't purchase seeds till you have at least one good harvest behind you as they are expensive and it would suck to waste your money on the learning stage.