What problem are you trying to solve? Why change?
Backlash can be brutal on these things, it is different on a 3D printer where gravity is providing the anti backlash and the forces are only acting with gravity. On this CNC you are pushing down and your material is pushing back, making backlash a huge factor. Your cutting bit can actually vibrate up and down if you aren’t careful. If I though these where a good idea I would have used them. A ball screw has backlash compensation, a leadscrew needs added hardware for backlash compensation (we used to use a second nut and spring but too many people didn’t understand how to set it so I had to take it off).