I have and old Garmin Streetpilot I3 that doesn't pick up a signal in our Swift Sundandce I suspect due to the luton, i.e. map shows other opposite carrigeway but blank in direction I am travelling, not much good really!!!! but it works fine in my car. Anyway I decided to buy a new unit but cannot make up my mind what to go for. I like the TomTom One v4 or IQ or the Garmin 205 or 225. Is there anyone out there who could give me hands on experience with any of the above, I don't use sat nav a great deal and always plan by map but i just want something that will work in a coachbuilt for refferece. I have found out in the last week that sat nav's are like chocolate bars in the sweet shop, i.e. so many differnt varietys of the same make to choose from, my head is spinning with model types accompanied with + & - reviews. Any comments greatfully received.