I am only on my 2nd grow but have tried both. The first thing I tried was the FIM. I waited till about the 4th node and once a small tip started coming up for new growth I cut the little top in half with some nail clippers (cleaned). Then it took about a week and I started seeing 3 nice new tops starting. On another plant I topped it. I did the Uncle Ben technique and waited until the 6th node and cut all the way down to just above the 2nd node. It split into 4 nice nodes from there. I liked the Uncle Ben topping much better. It gives you the option of using the top that you cut off as a clone. I'm no pro but that is what I have tried. I hope that helps.