I always prefer SCROG, it is by far the most efficient way to grow that i have found. Your plants are pretty big to be SCROGged correctly at this point. I would probably try the tie/pinching method for this set and on the next set of plants you may want to give the SCROG a try. It is fun to get huge wieght from a single plant. Nothing is cooler then a SCROG near completion when one plant has a pound on it.