I ran with CIS and enjoyed working with them until this spring. I had to change when one of my customers required a bigger freight policy and New York State regs made it imposable for them to make it happen.
I use the Schultz group in Henrietta N.Y. 585 424 1780 Im insured with Erie spec com and high value coverages also, they are good about claims. Ask for Nancy and tell her Bob Wolf referred you. Make sure you have your declarations page to fax to her.