I was just quietly using EZ connectors and ignoring the constant denouncement of them here online. Then I read Gordon Banks' column in RC report, a few years ago, and it explained why I had no failures and some others do have failures.

The EZ connector's screw will bite into ordinary, soft, threaded pushrod wire. It won't bite into Music wire, which is heat treated to be hard.

So, if you know the difference between music wire and soft pushrod wire, or you can figure out how to check & see if the screw bites into the wire, go ahead and use the EZ connectors you're talking about. If you still have questions, probably better go with Z-bends or clevises.

Good luck,
Dave Olson