Thanks guys, should of explained in more detail.
I use google maps now with smart phone but I was looking for more information not just directions, also looking to use it in and around Europe so needs to have Western European maps.
Would love a sat with some OS features if that's possible not sure.
Battery wise my phone it lasts around 4 hours if constantly on. I reckon a half decent sat could get 5 plus maybe?
Anyways thanks will check out the few links/apps now.