DB4D is correct, IMHO, it is mostly a personal preference. My personal preference is the Improved Clinch, simply because I've used it for so long that I can almost tie it in the dark (by starlight). But, I also use the loop knot for the connection end of my leaders for my jig Pushing rigs & tie the jigs on the other end of the leaders with a Improved Clinch. For casting purposes .... Improved Clinch works just fine for me. The knot may not be the strongest of them all, but I've yet to have a Crappie break the line at the knot (with either 4lb test or 6lb test).