Depends what you mean by stronger. Physically? Probably comparable. Is the stone stronger? Well, it can be, but it all depends on your skill level. If this is your first grow, i wouldn't even consider a complicated hydro system. I wouldn't say go for fully organic soil either. With fully organic soil you have to take into mind things like drainage, PH, what amendments you want to use, and composts.
Personally, i like soilless mixes like sunshine mix and promix. They have excellent drainage, so you with most strains you can really bog the ferts, and if you overfeed them flushing is relatively easy. You gotta go through the bag though especially with promix, and take out any big chunks of wood or whatever cause they can degrade and cause PH problems later on. Also good to ph test the bag in the store before you buy.