for a first time car owner, over 25 yrs old, and is in california??? my sis told me eastwood and geico ???
There's no "one size fits all" cheapest, and there's no short cut.
To find out who's cheapest for YOU, you have to shop around.
Try this site
http://affordinsurance.notlong.com
here you can compare quotes from different companies so you can find the best rates for you.