I have 45+ hours on my Sonic 11 (I keep records
Overall the kite is as good as new. The panel and strut finishing is some of the best I have seen. I am very happy with my Sonic.
The edges of some of the leading edge segment seams have frayed where they drag on the sand for self launching. It's not real bad and mostly cosmetic. It certainly would not wear out the kite. They could stop it happening in the first place by using folded seams on the LE segments.
On the early kites they provided stick-on anti-rub patches to protect the end LE attachment point from bridle rubbing. The patches themselves off pretty quickly and wear through the outer layer of the patch. I make my own now and will just replace them every 25-30 hours. The later kites have been changed to stop the rubbing wear.
The chicken loop line wears a bit at first then stabilises. It is 6mm amsteel so it will not break in a hurry.
The grip rubber on the bar gets worn around the chicken loop line hole where it bangs on the stopper ball above the adjuster cleat. It is cosmetic and not a problem.