Wayne,

creep, stretching (need to adjust the rigging on the water), fatigue (especially where our stays bend around a rotating mast), difficulty with terminals/eyes, lack of easy adjustment and longevity vs. cost has been the reasons quoted.
I like the idea of synthetic rigging, so I am hoping for positive reports from you <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />

How did you rig the shrouds and ensure adjustability?