Being old and not to bright I 'bit the bullet' and bought a Zumo 550. It sure ain't cheap but it works well. I like being able to use the included software to download routes to the GPS and the Bluetooth connection to my Cardo Scala headset lets me forget about it and it will tell me when it's getting towards time for a turn etc. I've been riding since the mid sixites (told you I'm old)and I don't miss a bit dragging out a map and fighting the wind to read it on the side of the road somewhere. As others have said, it's all personal preference and it sounds like car gps is working well for many. In my case motorcycle gps also works fine in my van. I like being able to leave it turned off and adventuring back roads, and when I want to get back home just turn it on and hit the go home button. I've used Garmin in aircraft I fly for quite a while and I love it up there too.