I did this in NY because some of the carriers I was interested in did not write policies themselves. I ended up saving over $2K per year over GEICO with the carrier I used for 2 cars (for my wife and I), with hugely increased coverage, and we have a perfect driving record! I also ended up getting a very affordable umbrella policy and renter's insurance through the same agent. I have been very happy with the experience, and make the agent re-quote me every year (which everyone should do, never stick with the same insurer if you can get a cheaper price for the same coverage)!