I have a TomTom 52 satellite navigation device and it is truly terrible. The internal battery lasts about 45 seconds (second battery after the first was replaced under warranty). The device takes a very long time to start up. I am not happy with some of the guidance (particularly keeping to the right when there is no need).
I bought it because it was cheap. I am now thinking about replacing it with a Garmin and paying a bit more.
How does build quality of TomTom and Garmin compare? Is Garmin likely to be faster to start up? Will the internal battery last longer? Most importantly, any comments on how the route guidance compares?