Its been mentioned a few times here and there, but wanted to get some input on this. I'm looking to buy a toy, not only for chasing, but traveling in general. I know one of the drawbacks mentioned with this is the lack of great navigation. Seeing as I enjoy and do quite well in navigation and route planning, its not something huge to me. More than anything, I want a unit that'll show me where I am and where I am going. I've read a few reviews and see it on Buy.com for $319. Anyone on here use it? For the price, it sure seems like a slam dunk!