the Go 910 be definitely the best gp device out there today . I use it on a long sojourn on the East Coast over the fourth of July weekend and it never miss . before I leave I load up a bunch of playlist onto the device with plenty of room to spare !! before I leave I be concern about the mount droop in the hot weather . I do not know if people have try this , but you have to turn the dial on the mount such that it click in twice . there be a first click , then dial farther until the padlock symbol meet the dot . even in the 90-degree weather the dock do not move . voice have some trouble with street name , but still , with the text-to-speech it be nice to have something more than the generic `` turn right here . '' love the big screen , better than Nuvi 360 and the Streetpilot c550 , my next turn be always visible well in advance . phone conversation be clear and map accuracy be fine . a great product !