I just started using Mio digi walker. On sale
$199
It's ok, does not have anything special for truck routes. I use it for when I get close to a pick-up. In NY it always puts you on the parkways, which is no good for trucks, I would hope you all know. I lot of guys come to Long Island and end up squeezed under an overpass. I always get nervous if you don't double check an area on the map, you don't know, you might end up in a bad way down some bum f@#K road.