I upgraded to a go exclusively last August. Problem, after 3/4 journeys unit would take 5/20 minutes to boot up. I finaly reached "TomTom" customer support. Very friendly & sent unit for repair, unable to repair, so a new unit arrived with a report saying , fully tested & in working order. I am now with unit number 3. Same problems, they want me to send again to Romania for repair. My question is, does anyone out there have a go exclusive that actualy works like it should? Thanks.