I use a Garmin 770 and it works well most of the time. I bought it as an upgrade to get the WiFi update ability. It replaced a Garmin 760 which I bought after Apple Maps sent me down a road that had a underpass that was too low for my MH. I have used various brands of GPS units, and several iterations of phone based mapping solutions and they all have their failings and will from time to time cause you to slap your forehead and yell at the beoch in the box. I won’t use any Google based product or applications for various reasons, but primarily they could not fine my home. Many people have used it to try to find my place (on a major road) only to be sent down the wrong way.