Navman GPS 4460 Car GPS Receiver

Pros: Wireless via Bluetooth, Back on Track feature, 320 by 480 (Tungsten T3, T5)
Cons: Sometimes marks you in wrong place, sometimes takes a while to get a position fix

I purchased this perky device from TigerDirect and so far, I'm satisfied with it. Compared to other GPS units including Garmin's Ique and Magellan's roadmate, this unit stands it's ground. I use it with the Tungsten T3 Bluetooth enabled PDA. The unit comes with a dashmounts for both the Bluetooth reciever and PDA. The Bluetooth signal is strong and the unit supports the 320 by 480 large screen mode available in the Tungsten T3 and T5. The unit gives you turn by turn directions on the display and optional voice guidance. The unit comes with the SMART ST V1.30 4 pack disk set, which contains complete maps of North America. The only problems I've had with the unit so far is that it occasionally thinks you are on another road and sometimes shows you making a turn you don't make. Of course, the back on track feature quickly realizes the gps's mistake and corrects it and also gets you back on your way after wrong turns. I recommend a 512 megabyte sd/mmc card which should hold 25-33% of the entire United States. The unit is very accurate and I recommend it to anyone looking for a professional GPS-PDA solution.