They both seem really cool and come with great features like auto day/night adjustment, speed limit display with warnings and lane guidance that shows you what lane to take so you don't miss your exit or turn.
if you want more pics or info on them its on motorola.com/motonav
I can't say I've heard much about those. I've tinkered with a few Garmins and they seemed decent. I have a hard time getting into the GPS thing. Cheaper to get a map.