Been with Geico since 1969, claims service is fine through 3 claims that were our fault (damn deer!). Went with State Farm for my 15-23K pound trucks since Geico wouldn't cover them. Asked the agent if they could match the Geico rates on my two cars, thinking I'd get an umbrella policy, but she said State Farm couldn't touch the Geico rates.
Currently using 3 different insurance compainies for home, regular vehicles and large private trucks (deuce & a half).