Summary: This GPS is nicely set up and isnt too hard to operate. The bad side is that there is no website support for the US and it has a tracking problem. This could have been the one I had, but when you stop, gps keeps flipping your position around as if you were rotating in a circle. When you take off it has to reacquire your position. This is a problem if you are in an area with a lot of streets where directions happen often.
Summary: I've now tried the icn550, replaced by the icn530, and now the n40i. They're all physically similar, with slightly different buttons. Big new hardware feature on the N40 is "navpix" (1.3 mpixel camera to associate a picture with the current GPS fix). Personally, I could not care less about that. What's amazing to me is that the map data around my house got WORSE this year (it's got the 2006 maps).
Summary: Tengo dos navegadores desde el 2007 por cuestiones de trabajo un tomtom y un navman n40i. Los dos funcionan estupendamente como gps y nunca me han dado problemas. Salvo el cambio de batería transcurridos dos años. El problema comienza cuando paso del sistema operativo XP al Windows 7. Con tomtom el programa se actualiza y puedo seguir utilizándolo en mi ordenador . El caso de navman es distinto.