I always replace with what is on the car from the manufacturer, as I am slightly resistant to change. However this is not a sports/performance vehicle and Dunlops are not bad tires; so go with that.
Also the Michelins will last you longer, how much longer depends on your driving habits. Keep in mind that tires have an expiration date, which is why some good brands might be cheaper at some outlets, if the expiration date is closer.
I am in no way an expert in this field, just a consumer that had to replace quite a few sets, and I have found that all well known brands perform comparably well. No-names not so much, that is why I try to keep it simply and stick to what the manufacturer deemed most fitting.