I'm not saying Z-bends are bad. I've seen two planes go in because the Z-bend pliers used put such a tight bend in the wire that it failed mid-flight. Just a warning.

I use EZ connectors on throttle and nosewheel for adjustment. I lost an airplane to an EZ connector on the elevator the first year I was flying. That was before the days of the new metal retainer. The nylon retainer slipped off and the rest was history. I mostly use L bends and the fastlink pushrod keepers. That is a reliable connection and if you need to remove the pushrod for whatever reason, you don't have to remove the servo arm. I do use Z-bends every once in a while.

I say if it works and will be reliable, do it!