It's all a personal choice Rob depending on the type of fishing you do. I've always preferred cable steer myself, infact when I bought my current boat it came with a Terrova but I had the dealer replace it with a Fortrex.
I've always found cable to be more direct and faster, plus your not using your battery power to operate it.
PD on the other hand allows you to operate it from anywhere in the boat, but they seem to always develope problems in the circuit board.