I've been loving my GPS experience using my XV6800. Now that I can get a GPS lock within a few seconds, it's been great. I use my GPS while driving and walking. It's been a great experience and I can't imagine using a smartphone that doesn't have a built-in GPS.
So if all future smartphones come with integrated GPS chips, then who's going to need those stand-alone GPS units like the TomTom and Garmin devices sold at BestBuy?