rac are quite good, as are AA and green flag.
you cant expect gold service for your old Cossie if you are paying < £100 per year, depends on who it is that is sent to rescue you, some are very knowledgable, some are'nt.
RAC now equip all vans with a retractable tow bar that is no good for 4x4's, AA will listen and send a tow truck if you tell them its terminal problem when you call...