there is something to be said about peace of mind in knowing that you have to work really hard to get lost. i have the hch nav system and really like it. use it quite a bit going to places. i like being able to change plans and have the system adapt and reroute. also handy for finding a quick alternate route home if traffic is bad. have used that a couple times too. the the tch nav system is probably like the hch nav and has voice recognition tied into various climate control and audio functions. this is nice and safer too. its nice being able to just say "radio, 105.3" and have the radio turn on and tune into 105.3fm without taking my eyes off the road.