I have been with Geico from the very beginning - 8+ years and counting. At the time, I shopped around amongst a handful of insurance companies. They were the cheapest. I have to admit however I havent done much price comparison since.

Geico has great customer service. When I call in, they never tried to upsell me which I find horribly annoying. They make the changes I ask and it is done right the first time.

Overall, I have no complaints about their service. I wish they get rid of their caveman ads; those ads dont work for me.