Nobility

I have a question that is directly related to this topic. I recently bought a taxi fleet and it has only old cars that were produced before 2000. The insurance of all cars has expired and I want to take out a multi-insurance at generalliabilityinsure.com, but I would like to thin out how reliable this company is and if anyone worked with it? Also, I wanted to ask if I will get benefits for insurance of old cars for taxis? Somebody knows???