This is a question that we cannot answer. For one, the best company for you depends a lot on your age and driving history, as well as your location. There is no "best company", because of the variables in the cost. I've found Mercury to be good, but you should also shop around with AAA and the insurance companies you see advertised.
As for "reasonable", that has no meaning here. You're in for a shock, no matter which company you go with.