SOG is just a bunch of small plants crammed together, so your individual plant doesn't produce much, but the group of them will produce a pretty good amount for the space used. SCROG uses fewer plants, letting them sit longer in veg, then weaving them through a screen with 2 inch square openings that you can tie the branches to. Both produce a carpet of green, but some prefer the SCROG since you will use fewer plants, which helps 1) legal medical growers that have plant limits and 2) the rest of us that live in states that penalize per plant. Either way, you will be maximizing your grow area with either of these methods.