We had AAA for over 30 years and finally switched to GS when AAA said they might tow our truck with the truck camper but would not tow our boat and trailer if we broke down. They also stated that their policies on towing varied depending on what state you are in when you need service. We didn't want to take the risk of being in a state where the service might not meet our needs.
As for GS road assistance we have only used it once when we came out of a restaurant one night and found we had a flat tire on my wife's SUV. They responded quickly, changed the tire and put the flat tire in the back of the SUV.