Oh, just one more thought (or 3) but presumably the hardware will be identical in the US and UK models? No funny unsupported data formats or anything no?

Is there a nice Blackberry Configurator website that will send me all the GPRS and MMS settings for O2 UK?

What about unlocking it to use my SIM - is that normally a simple procedure or won't I need to if I buy it without a contract?

And oh dear it looks like it will have the AT&T logo on the front. I spose I could scrape it off with a chisel! ;)