I ordered this BlueNEXT51 Channel Bluetooth GPS to pair with my Blackberry Curve 8320 in order to use the Google Maps software. The device was instantly recognisable to the Blackberry, and paired within 15 seconds of start-up.
It took a few minutes to acquire the satellite signals the first time it was started, but on subsequent start ups, GPS acquisition has been really quick, and to be fair, perfectly adequate for such a small device.
I have been amazed at it's positional accuracy too, compared to my old 12 channel Garmin device, this device is bang on the crosshairs every time.
I have now used this in both heavily forested areas, and urban situations with lots of concrete and steel, and have been really pleased with it's ability to acquire and maintain a lock. Battery life is good and certainly not a cause for concern. If you are after a bluetooth compatible GPS, then for the money this is spot on! No reason not to purchase it.