I am using Ensemble Megaflux power cable for power bar
The power cable is very well shielded and has 6 cores (2 cores each for live, netural and earth). Shielding should be very good because emf detector ("Meet" screw driver type) does not flash or beep when it is placed near the power cable
However, Sommer cable has no shielding, and the emf detector flashes and beeps when it is placed a few inches away from the Sommer power cable!