Quote from @Angel Peng:
Currently in contract to close on my first duplex but the Landlord insurance cost took me by surprise. The highest quote I got for my duplex was $2600 annually and the lowest was $1300. The mid range is around $1950. I want to go for the lowest but I also want to make sure that I am appropriately protected. With all the specifics being the equal, how could the range be so wide? Utica National Insurance Group is the one going for $1300. Any with good or bad experiences with them that you can share. Thank you so much!
You state that everything is equal but are concerned that not everything is equal...
It's very possible to see a price spread like that even with comparable coverage but it's also vitally important you work with someone that has your back to make sure you understand your coverage before you'd have to use it.
There are likely at least subtle differences between those proposals.
In terms of good and bad experiences, you won't find an insurance company that doesn't produce happy and unhappy customers. Unhappy customers tend to share their experiences more.