Also the cable length needs to elongate as the heel comes up. Most cable bindings employ some sort of spring that is stretched to accommodate this. After a while the spring loses it's tension and must be adjusted tighter or the cable becomes too loose. The G3 Targa, Rainey Superloop and the Pitbull employ the springs in such a way that they are compressed instead of stretched when the heel raises. Furthermore, they offer 3 choices of stiffness for these springs.
Cables offer much more lateral control than pins.
Finally, Voile offers both pins and cables. The dual boot retention systems are insurance that your boot will attach to your ski one way or another if something breaks and many skiers with these will remove the cables for slogging uphill for comfort and simplicity. All said and done, cables will improve your turning control. In the past couple of years skiers have gotten into raising the binding above the ski top a quarter, a half, and up to a full inch. The physics involved is that you gain leverage on holding an edge.