navman 4460 or tomtom 3 for palm T3?

I have recently bought a Tungsten T3 and am considering different GPS options...

i am after a bluetooth solution so it seems the options are as above. can anyone tell me the pros and cons between the tomtom and navman (specifically for the T3)? i have not seen the software for either, are they both quickly updating and user friendly?

as far as i can tell the only real difference between the spec is:
navman 4460 has european maps, a card reader and 30 hours of battery time... but no SD card included.
tomtom has only UK maps but has a card included (but no card reader).

also, is an external antenna going to be neccasary?

cheers from a beginner...

[Charlie]

What you have said about the differences are correct, however TomTom also includes the Major roads of Europe. An external antennae will only be necessary if you can't position the receiver somewhere suitable in your vehicle to pick up the GPS signals i.e. in the centre of your dashboard or if your vehicle is fitted with an athermic windscreen.