I am one of the few (apparently) people who paid for Wayfinder on the N800. One of the best things about it was that it came with a suction cup mount to mount on the windshield.

When I upgraded to the N810 I was able to adapt it for the N810 and it was easy to transfer the license over. I'm not all that thrilled with OviMaps but I just fired it up the other day. I might give it a try this weekend just to mess with it, but it looks like a step backward so far.