Navman 4100 or Emtac Trine II

Hello

pretty new to GPS world.

I have a IPAQ 4150 that I now want to turn into Sat Nav system.

I'm thinking either Navman 4100 or Emtac Trine II.

Both I believe are Bluetooth.
I know the Emtac is pretty new, any one got any ideas which is better ?

Also - not sure what software to go for - is TomTom 3 any good (seems to get mixed reviews in Forums)

Thanks

[Charlie]

Emtac say you will get around 10 hours from their receiver whereas with the Navman will get you about 20 hours. I haven't used the Emtac but I suspect they will both offer the same performance so It may come down to battery life versus cost.