USLI Insurance? Bad reviews online...

[Michael M.]

I have been shopping for an umbrella policy, and USLI has come up with more than one broker.  They will do up to a million for around $500, which seems standard.  They are the only insurer that did not make me raise my auto insurance.  

It seems like a few people on BP have mentioned being insured by USLI.  When I look online, they have a C- review on BBB and the internet is full of complaints regarding actually filing a claim or getting refunded after canceling service.

Does anyone here use USLI?  Has anyone filed a claim?  Is it better to just go with one of the big boys (Liberty Mutual, Allstate, etc.)?