I installed Sygic moving map yesterday, and used it for about 4 hours driving today. It works very good, with good voice guidance ( better sentences than ovi maps 3), with a femaile voice in dutch. I liked the program immediately.
Online reporting of traffic jams would be nice, but this feature. although available, didn't work in Ovi Maps, so, what's the difference ?

Strange thing is that however maemo is a linux distrubution, I had to install Sygic from a windows computer. The downloaded file is an .exe file. Installation from my ubuntu PC was not possible. I hope they will change that.
Downloading directly to the N900 was possible, but for installation I had to copy the file to the windows computer.