I've been with Liberty Mutual and State Farm all my life. I have had nothing but fantastic service from both. SF would issue checks to me right from the local office never having to deal with corporate. Never had to fight once on anything with them.
Currently with Liberty Mutual and they actually covered my 4 year old above ground pool from last winter that collapsed. With the ridiculous amount of snow we had, they made an exception and covered it as normally above ground pools are not covered unless a tree or something falls on it.
They never even sent an adjuster to even look at it. I had the check in my mailbox 5 days after calling to make the claim.
Can't recommend either company enough.. based on my experiences at least.. granted this is not RV insurance but hopefully if I ever have to make a claim, it will be the same type of service.
2015 F350 6.7 Platinum
2015 Coachmen 360IBL