I now own my second pd motor. The first was a 40 on a 16'Sea Nymph, this one is a 70lb riptide MK with auto pilot on a 178 bass boat. There are trade offs with these to cable steer but I like what I can do that they cant. I like to set the motor to where the blade is barely turning over and set it to run parallel to the shore and forget it, other that an occasional bump left or right. I cover a lot of water like this. the 40lb sent me home for lack of power, the 70lb wants for nothing powerwise. The riptide is saltwater sealed so few circuit board problems ever arise. Variable speed is a definite. I can set the motor and walk around the boat, like trolling alone. Some of the cable drives won't hold direction after removing the foot, keeping you glued to the front seat. The pd's aren't as quick to steer but not so slow as to cause fish to be lost. Deploy on a Terrova is better than my PD V2 but mine isn't terrible. The auto and I-pilot additions are super, the Auto pilot works off compass heading and the I-pilot works off of gps coordinates. Both are great additions. Fishawk has a Fortrexx on a high sided Ranger and for his style of fishing , he loves it. He spends a lot of time vertical jigging. Double tough and very well built. I can't speak about the MG motors so I'll leave that to those with first hand exp