>>>>"I've used both, and I don't find a dynamic one any more comfortable than a static one."
Have you done a back to back test??? Even doing a test a few hours between the two would skew your results let alone weeks to months..
I could see how using an all nylon webbing system might present a problem, especially if using an underrated webbing. It would make sense in this situation to use 100% polyester. But this isn't the case in my system. I wrap my 3/4" 3000lb nylon tree huggers around the tree as many times as it takes so my anchor point/strap loop is only about 18" off the tree. This means my whoopie slings make up most of my suspension system. When I change the strap out to polyester I notice my hammock isn't as comfortable.
I have many hammocks. My current favorite is a silnylon one I made.