Just got my PAC from O2 moments ago - I might call them and see if they can match the £30 option for T-Mobile on BuyMobilePhones.net!
So decided to do an upgrade through Mobiles.co.uk on o2 instead of transferring to T-Mobile.
18 Months 1200mins and unlimited texts, 500MB of internet for £52/mth, but 7 months are half price. Total price is £704 with the 7 months half price including Quidco discount.
Going to claim on the insurance for my Desire (it is in fact damaged, see the Desire thread) and maybe sell the new one for £200.
Has anyone got theirs from Mobiles.co.uk yet?