Was with the AA for years but the price kept rising. Phoned them up when i got my renewal and found that if i was a new customer it would be about half the price, so told them to stick it. So much for rewarding customer loyalty.
Now use
http://www.rescuemycar.com/ - really cheap and they just call out the nearest breakdown company locally to you when you need it. Used it once for Claire's car - Westbourne motors were with me in about 15 minutes
In the scoob i don't normally carry the spare wheel unless i'm going on a long journey, just have one of those inflation cans.