I have a GP Ultrasport with literally hundreds of flights on it and the two inboard hinges on the elevators broke at the bending point. Fortunately the the outer hinges held and there wasn't a crash (plus I had sealed the hinges with Monocote). Perhaps I wore them out and the plane is also about 11 years old so maybe the technology has changed since...???? However that's enough for me. I've been using the Klett hinges (ones with the metal hinge pin) since then and will never go back. I also find that the easy hinges are not always that easy to install.

Just my $.02

...........Mark