If you sign up for a 24 month contract with "selected" smartphones you can get a bonus 1 gb data per month for the life of the contract. They had this offer already for Android a month or two ago, but now it includes Nokia etc…
Great deals:
2x Huawei Ideos 8150 on the twin cap for $29 a month
2x Huawei X5 on the twin cap for $49 a month
They also have the Nexus S/Desire HD for $49 a month. Also remember you can add a second service and utilise the %15 discount.
Note, I am not endorsing the vodafone network. Note2, due to the network you may or may not be able to utilise your 1 gb bonus ;)
Anyone know if the 1gb is one of the options you can choose instead of the free calls between voda and three or an extra on top of that?