Dual XGPS-150. Generally good performance though can really take some time to acquire position.
My experience has been that it achieves a position very quickly (in a few seconds most of the time, even though it's been turned on hundreds of miles from where it was turned off), unless there is poor satellite coverage.
one bugbear was that if not requested for position info for more than 15mins, it would go into a standby mode and then when asked again would have to re-acquire position.
I've never had this. It could be a function of the ios app; I use an Android Bluetooth app to connect to the XGPS150 and it's never disconnected on me provided the Bluetooth app is running.
I could mention also, the Bad Elf Pro - BE-GPS-2200 for those who like the numbers.
It will connect with up to 5 Bluetooth devices.
