I know this topic has been ventilated before but..

I’m currently installing the rudder linkage in my new plane. I’ve decided to go with a pull pull system, as always. To reduce the slack in the wires I recently bought a pull pull wheel. So long, so good. As I didn’t know how to connect the wires to it I did a search here on RCU. Then found a couple of thread that explained that it wasn’t such a good idea to use a wheel on the servo, and regular horns on the rudder, since the wheel give linear movement and the horns don’t. I read that you had to install some kind of wheel on the rudder as well, to get linear movement on both ends.
After reading that I went to Znline.com to look at some pictures. I found pictures on the Enigma showing the wheel, and horns installed on the rudder.

So, my question is, is it a good thing to install a wheel on the servo and horns on the rudder? And how exactly does one connect the wires to the wheel? Does the wheel give me a better system over the usual servohorn?