I have the 1030 and find the touchscreen zoom fiddly/annoying and i see a friend quickly and easily zooming in/out on the Wahoo using buttons. I'm looking to upgrade from my 1030 and see that the 840 has side buttons ... but can't find anywhere that will tell me if the buttons can be used for zooming in/out of the map. Any user experiences from people who have upgraded from the 1030 to the 840 or 1040 please?
