Let me re-phrase your question to "Is it worth spending $1000 a year less to move from a premium insurance company to a cut-rate one?"
Spend some time in an auto body shop. See the people's cars insured by SF get repaired with true OEM parts. Meaning, if you have a Buick for example, the fenders, doors, hoods, hatches, trunks, whole car side panels from rocker to roof rail, suspension parts, etc. will be made by General Motors or the exact company that supplied a part to GM if they did not make it themselves for production. And if they find more damage, they call up SF and get a supplement to authorize more work and $ for the job.
Now see the person's car who has a cut-rate insurer. See the white box truck pull up and dump off cheap poor quality crap made in China, Taiwan or other overseas cheap places. But don't worry, the Asian aftermarket collision parts association says that they meet all requirements and are just as good as the real thing. Uh-huh. Watch the body techs try to make the clock time getting that junk to fit. They often have to cut, weld, twist, hammer, bondo them into approximate fit. But the poor sucker who gets his car back probably can't tell a fuel pump from a map sensor, so he doesn't care. And he certainly has no knowledge that cars for years have body panels made of high-strength steel with certain properties, both metallurgical and physical. Physical as in bends, folds, attachment points etc. that were designed into the part as a component in a system. A very complex safety system, to withstand certain forces then start to yield a certain way at a certain rate. The whole car is designed that way, and depends on all of the appropriate components to do the job they were designed for in a crash.
Geeze, it sounds like I'm lecturing here
Anyway, an insurance company that has significantly lower rates... what could the reason be for the lower rates? Because they are just so much more efficient than their competitors? Or...?
Spent some time in a body shop, helping out. Learned a bit about the insurance process. Not pretty for some.