Just been thinking about picking up either one of those refurb units for basic threat protection for in city driving (incl local highways) to be used in my weekend car. The Redline is being used in the DD and will also be used during interstate travel. Currently, I move the Redline from car-to-car. I do not want to spend money on getting a 9500ix (I understand the benefits of reducing falses). What are your thoughts? Which model would you recommend?