You are talking about AAA emergency road service, right?
We have AAA for our cars. AAA charges an extra rate to cover RVs. And AAA does not cover RVs in every state.
Some have been able to call AAA with their Class B without the additional coverage and because the Class B looks like just a van the guy that shows up does not know the difference.
You really want Emergency Road Service that is RV specific and will send someone who understands that there are parts of your Class B underneath that need special attention when towing, putting it up on a jack, etc.
There is Good Sam and CoachNet for RV emergency road service - asking which is better will result in a flood of conflicting responses as it is like asking what is better, vanilla or chocolate - everyone has a preference.