HP4700 and Bluetooth GPS

Hi all,

I have just bought a HP4700 PDA and am looking for a GPS Bluetooth Receiver.
I have looked around and have seen a few different makes but aren't sure which ones are cpmpatible and which aren't.
Also are all GPS Receivers as good as each other coz some can pick up 12 satellites and some can pick up 16?
Here are the ones ive seen that look good:

Fortuna Clip on
TomTom
GlobalSat BT318
Leadtek
Navman 4100

Any Advice would be much appreciated.
Thanks.

[Charlie]

They will all be compatible if they are Bluetooth. In theory the more satellites you can connect with the better so a receiver that has 16 channels would perform better than a 12 channel model. I use the TomTom receiver which is 12 channels and have no problems with it.