Which car insurance agency to go with?

I am currently with Liberty Mutual. They have been good to me, even tho I have not needed them at all. I am a GOOD driver LOL!!!! Anyways, I'm shopping around for lower rates, do any of you have any good companies to suggest for a quote? I have gotten a quote from 21st Century Insurance so far. I did a BBB check on some of the well-known ones and WILL NEVER go back to Geico!!!!! Suggestions?????