I have Good Sam and fortunately in 31 years of towing an RV, I have never had to use them. I do have friends that have had very good results with Good Sam.
I may be wrong on this but the way I see it, Good Sam specializes in RV's, AAA in auto's. I have an RV, so I go with the expert in the field. A few dollars price differential is not a concern to me, I want the one who knows how to solve an RV down on the road issue.
F250 HD 7.3 Diesel :)
31 Ft RLS Designer 5th Wheel :D