ORIGINAL: dookieshoot
Ez connectors are trash, I lost one plane due to a failure and have seen several others go down and a few not even get off the ground.
They fail if they are improperly installed as with anything else.
They are "trash" if in the wrong or inexperienced hands... but then that is true of a lot of things.
If you are fearful of them, you can always install a second wheel collar behind the EZ connector for additional safety and still keep the ease of adjustments.
I'll put up an EZ connector against a plastic servo horn's tensile strength any day... the horn will always break first before a PROPERLY installed connector gives.... something which I've tested.
The EZ connector is made of all metal ( assuming you are using the star wheel retainers ) while the plastic servo horns are no where near as strong.