Why bother comparing? It would be no contest. The Navigon unit is head and shoulders above just about anything out there.

It uses all of its 400 MHz, Samsung ticker to do one thing very well... Navigate. It has the same size screen as the N800 but runs at a lower resolution. However, it has "Reality View" which is amazing. I caught a glimpse of the software at the end of last year. It was running on WinCE I believe. It looked like it would rock. In the US they were calling it the 7100.

However, if your taking the N800 for other purposes and you need software that will tell you when you take a wrong turn and will find the way home for you, Navicore will do just fine.

The N800 also lets you run Maemo Mapper which I wont leave home with out but it really is a different application. It can not plot changes on the fly with out a connection but, you can view satellite, topographical, and many other map formats that you download and save.

I use Maemo Mapper as a charting app and a secondary store of personal POI's.