I have a HP iPAQ 6910 provided by my work. Bloody great piece of kit, the TOMTOM works fine (except it will not "remember" my home locations or any favourites), and all other functions seem to work well also. The only downside is the battery life. With just the phone function turned on, the battery will only last about 6-7 hours. If you use the gps without being plugged into a power sourse, the battery life drops to about an hour.
Whether I would have one if I have to pay for it myself is another matter. I think that the £400+ could buy something with a better battery
