I have the Good Sam Platinum Level... it covers all my vehicles and I have had no real issues. I have used it several times for a car.. they did take a couple of hours to get someone to pick up the car when I had a radiator issue... but we were along the interstate in the middle of nowhere on a rainy Sunday afternoon. I understand that they had to get a driver to come from about 45 miles away. Same car had a tire issue, just outside of larger town, repair service was there in less than 20 minutes.. it just depends on when you have issue and where you are at the time.
I also like that they have the RV tech assist call line. I have used that on a cold holiday weekend, and the tech was great help, walking me through my issue patiently suggesting various options, and explaining why he was suggesting the option. As a single traveler... that alone was worth the cost.. who knows what I would have paid to have a tech come out on a Holiday weekend (if I could have found one)