Well I have been using the garmin 1490T for the last couple of days. Been very good. I like the junction view on the express ways it is very helpful. The only thing I have problems with is the security feature. I set the code and you are to be able to set a destination like your home as a main location so you don’t have enter decode when you are there. Well it makes me enter my code every time. Of course breather it do thatcher let a flicking thief steal it and use it. At least this way its useless to them. Of size is about the same as it was from my garmin 265wt model. Other than that there is not much difference that I see. Will test it out more this weekend and report back.