With recent reductions on the price of an 820 I am thinking of upgrading from my 810. Can someone let me konw how comprenhensive the maps are on a 820. When I got my 810 I added better maps on it using an Micro SD card and downloaded them from the web. I dont think there is a Micro SD slot in the 820 so are you limited to what is on the device.
Also any other feedback on the 820, I know there has been various comment about how responsive its touch screen is, has this been improved with firmware. Has anyone else moved from a 810 to 820 and would they recommend it.