Funny. I knew someone would post that, so allow me to restate my question beyond the obvious:

Is there a difference in performance that you are seeing because I am not. In my controlled tests, my turn over rates seem the same, the fly seems to land as softly as the other, in other words, I detect no 'obvious' performance differential between the two thread sizes.

So, did I miss something, or is this just another 'your mileage may vary' that is what makes furling so intriguing?