To chime in late, we live on the IL/WI Border. We have had lightning strike 3 houses down. 3 pole transformers replaced in our back yard due squirrels. Had a number of power outages the past 15 years. I must say, we have NOT lost any of these pieces of electronic equipment. Refrigerator, washing machine, Dryer, dishwasher, furnace, and AC unit w/o any protection, are still working. We get surges every once in a while too.
I have 5 Surge Protector Power Strips, at 5 different outlet locations in our home, with 2100 Joules each. But, one of the Surge Protecters is around 4000 Joules, for TV, AVR and Satellite receiver. All Belkin protectors.