HI Mel.
Without doubt I would recommend the HP IPAQ 4150, TomTom Navigator 3 Wireless, 512mb SD memory Card
4150 includes Bluetooth and Wireless networking. 8hour battery life.
Order the Seidio 4150 Carkit for it (£39 from www.totalpda.co.uk) includes loudspeaker and charger for IPAQ and the GPS unit.
The 4150 is still winning awards for best IPAQ in magazines like PDA essentials. TomTom3 works great, I have installed CheckPOInt (Speed camera and other points of interest notifier)
I have Shrek2 & Finding Nemo installed on the rest of my memory card. Life in the traffic is just bliss now
!
Paul