Cheapest online car insurance?

Which one do you use or have you used and have you had any issues with them?

Thanks ladies (:

My husband and I use Geico. We've never had any issues with them and they've been pretty cheap! Progressive tried to charge us $60 more a month

~BUMP~

Progressive was charging me $130 some odd a month for one car, full coverage. I checked out Geico and for the same exact coverage they wanted $75. So, I think it's clear that we switched, lol.

We currently have GEICO and I have been able to get much cheaper quotes from Esurance and State Farm. We haven't had any issues with GEICO, other than cost, so I'm making sure to do my research before I switch. They do have pretty great customer service.

We use Allstate.