Yup, I use the E710 on vodafone, and it's an excellent phone. The only downisde is the battery life is abit poor (probably why they give you 2 batteries!) and needs recharging every other day.
Its pretty good on data as well, I can browse the net via GPRS via the irda port on both my pda and laptop. You can also access the phonebook, SMS, and pictures taken from the camera from the PC.
Beavis