Have they even released the price of the phone on the contacts or PAYG yet? Bit early to be complaining, although I was hoping for the same PAYG deal as the 3GS.
Also sounds a bit strange that you will change network even if the deal is no better? At least O2 have given us some details unlike all the other networks.
They have released the tariffs, and the PAYG one is crap.
Another reason for leaving O2 is the fact that their data network is unreliable anyway, but also over princible in relation to the tariff thing.