[Closed] Garmin 705/800 Navigation

I recently bought the edge 705 off a mate as I don't drive so I don't know most of the roads I want to ride, and writing directions down and following them on the road was hard work!

So the navigation on the 705 is great... when it works. It seems to have off days where it thinks you're going the wrong way, when you're not, and recalculates routes for no reason, meaning you have to re-load the route again, which isn't exactly fast!

Has anyone else had the same problems? Looking to upgrade to an 800 of they're any better...