Surprised that Erie was less expensive than others. When I bought my first rig I had Erie for auto and home, always rated in the top five for claims and service, but my agent told me Progressive was less expensive and took me there. Last year I was ready to switch to Safeco, (owned by Liberty Mutual) as they seemed to be hundreds less than Progressive until I looked at what they each had my rig valued at, $30K difference, so I called Progressive and dropped the value to Safeco's figure, which is still slightly higher than N.A.D.A high value and Progressive's price dropped $75 or so under the Safeco rate. Every time I've checked Good Sam, 2-3 times, they were always higher than the currant rate I was paying. Don't forget too that your credit rating has a huge effect on the rate you are quoted