<p>I’ve bought whatever Costco sells, which has cost up to $200. Some of them stop turning on, some can never figure out where we are, some say we are getting off the freeway and back on while we stay on the same freeway the whole time. H updates the map but these problems remain. Just glad we have iPhones as backup. This way in case one device has no reception, the other may. Has saved us several times.</p>