streets&trips-Mexico

We have a relatively new Garmin 2757LM ($220) and it is amazingly superior to our old NUVI - well worth the investment. We can import the .gpx routes from S&T and we can create routes in the Garmin and save them to be called up later. There are many other features and it is faster and more accurate - and it has the 7" screen you can actually see. We connect it to our computer via USB and have not tried the SD slot - it is a very small slot and we do not have a card. We have even found the "Lane Assist" feature works on some exits in Mexico. Does not require a Mexico chip as it is already loaded with all of North America. I have looked on the Garmin website and cannot tell if there is any way to determine which units have the route transfer feature but I have heard they do not all have it. You might contact Garmin to find out. Let us know if you find a web page that shows the unit numbers this feature can be used with.