I see that you recommend for me the 64 series and it is the*perfect for navigation inside the city with tall building.*
Can you give the different and similarites between 64 an the montana680 & orgeon700?

I can see that the mountana 680 has all the features of GPSMAP 64ST plus it has a camera. are there any other features that i should put in mind before deciding which one i pick up?

What about the bluetooth option in the GPSMAP 64ST. What do i use it for? can I connect it to a cell phone and take a picture and the location can be added/ loaded from the gps device to the picture details?

Is there an option to turn the pedestrians walking within city in montana680 & orgeon700? How do i set up the device to comfort me in walking within the city?