Compare Auto Insurance Companies

What is the best insurance company to get auto and home through in Ohio?
I want to get them both through the same company because they give you discounts rates. The insurance will be for two cars and include my wife on the account. Is there an easy place to compare rates?
We had Allstate for several years and when we purchased our new home and car, we decided to compare rates. Allstate was the highest. Nationwide was okay, but they required a membership to the Farm Bureau to get their rates??!!?? We went with State Farm. We got more coverage for less money than any other place we compared.
Auto Insurance : How to Compare Auto Insurance Companies