I'm currently with Saga, but that's only because I was offered a good deal allowing me to pay my car insurance and breakdown insurance together for about �16 per month all in.
However, prior to that, I was with
Autonational Rescue. Over the years, I've called them out on several occasions and I've always been satisfied with their service. They've recently been voted as the best value for money service by readers of Auto Express. Their average response time is 42 minutes.
'Total SuperService' (which is what you've said you want) costs just �88 per year. However, if you haven't had a breakdown in the past 12 months, you can join for
�66 per year. You keep that 25% no claims discount in future, as long as you don't call them out more than once in any 2 year period. (If you call them out and they take over an hour to get there, it doesn't count against your NCD anyway). New members also get 15 months cover for the price of 12.
http://www.autonational.co.uk/
Chris