imported post
the 550 is a well built unit so no probs there, the screen is really good on the garmin, theres a couple of things that i dont like, the count down to the next turn is not very accurate, and it would be nice to have an idea what the next command is, ie roundabout, turn right etc. Other than that the unit is really good, themain reason i bought this though was it also has an audio out jack plug so it can be connected to the aux of the 1800