I had Allstate for over 10 years. by the end of that time my rates had doubled, no reason, no accidents or claims of any kind. Called them once about being hit by a shopping cart while in the store at WalMart. I figured it would be covered under my "0" deductible Comprehensive coverage....UhUh, no way, collision. The shopping cart was moving.
Then they all play the "Vanishing Deductible" game. This is where your deductible goes down each year until it is "0". Except the amount you pay for it NEVER DISAPPEARS! So you end up paying a deductible each year for accident you didn't have! Stupid plan, but even more stupid on my part for falling for it.
Went with Progressive, saved $425.00 every 6 months. They have their games too of course. Specifically asked if the initial quote was a "Teaser Rate". No! we don't do that. Come renewal time, that turned into a "New Customer Discount". Duh, same thing according to my wallet. Price went up.
I saved money with Progressive (so far) and will never go back to Allstate.