Tried searching for reviews on both but cannot find any conclusive results.

Has anyone used both?

Which is better?

Also do the have audio out ports, such as an earphone socket?

I can get either for the same price so I wanted to know which is best.

I Have the 6000. Not used it yet but i can tell you that it has no headphone port (making the mp3 player next to useless).

It is based on windows ce so it does have a bit of lag on the menues.

neiver
smartnav by far the best in my opinion but very expensive