Yes, we were among the suckers who endured the idiotic lines, activation woes and intermittent service that you've undoubtedly read about after the iPhone 3G's launch this past Friday. But our reason for suffering through myriad hassles to get our hands on Apple's newest hotness wasn't purely selfish. We wanted to see whether the iPhone 3G's new GPS functionality was worth the cost of admission or if we'd be better off buying one of the many stand-alone navigation units currently on the market. Make the jump to find out if it's worth your hard-earned cash and a place on your dash.