GPS for the Windows Mobile 5?

billapepper asks: "I recently purchased a Sprint PPC-6700 and was looking to add GPS navigation functionality, however there are quite a few to choose from. I've read about TomTom, Co-Pilot Live, and Garmin Que, but haven't been able to tell which one is worth the $200+ price tag. I was wondering what the Slashdot community felt was the best based on support, functionality, accuracy, map sizes, and ease of use. As a side note, I already purchased Microsoft Pocket Streets 2006 (which came with a GPS receiver), so the ideal option would be a way to hack Pocket Streets to add routing capabilities and, if possible, voice guidance."