I've had enough problems with quick connectors that I now use 90 degree bends on all pushrods except throttle, for which I use z-bends. Thicker pushrods can break if you try to z-bend them, but thinner pushrods for engine throttle aren't a problem.

I miraculously managed to land a plane last spring after losing the elevator control to a quick connector failure. If you decide to use them, just be better at routine inspection and maintenance than I am!