jamief I was in town today, the guy in CPW told me that the contract is with O2(while the guy in the O2 store said that its with CPW), but the unlimited text can't be changed if its a new contract(can be changed if its upgrade). tho the guy I spoke to a few weeks back said you can change it after the 1st bill(tho I was asking regarding the Xperia X1 at the time(tho it should hold true for the Touch HD as well),so still not anywhere near getting a definet answer(have read on the xperiax1.net forums of people getting the unlim text changed to unlim web, tho some cases they had to threaten to end the contract under the 14day cooling off period).
had a play with it in the Orange store for a few mins, didn't really get a feel for it(had to use the stylus in most of the menues). would need the 7days cooling off period to play with it a bit more before deciding if its for me or not.