(Sort of building off the "1 and only 1 fly" thread, but a new twist) NOT (necessarily) your most productive fly, but just your favorite fly. Could be you have great memories when using the fly, or could be it's just the most asthetically pleasing fly for you. What is your "favorite" or "most special" fly? For me it's the Renegade. This was one of the first fly I tied when I was just learning and, for some reason, just loved the way it looked. I tied up a bunch, probably size 12 with disproportionate hackle and all, and caught some of my first fish with it. Ever since, on some of my toughest fishing days, a Renegade will nab a fish here and there. It's not the most productive fly, but one that holds some special history for me. How 'bout you?