i use all three, rooting powder, clonex gel and dip n grow. generally what i do is use the dipngrow as a "presoak". ill take my cittings ad prep them, and then drop the stems in a 10x solution of dip n grow for about 60 seconds, and then dust with powder. i use the clonex also in a different cloner, they all root about the same. nice thing about the dipngrow though is you can pour a little in your cloning machine and it will consistantly give the cuttings a little root hormone boost with their sprayed water.