if you get a sat nav buy a tomtom i have had two garmin sat nav's and both had faults, just bought a third (for use in In Car Entertainment) and that had faults. I know someone else who got given a garmin satnav and that also has faults

now if you wanted to buy a gps for walking - I would suggest garmin all the way - rugged and reliable, but their satnavs are just shoddy.