Hi (I did a search for this but no luck so please don't shout if there is already a thread). I am from the UK, but what would there be any issues if I bought a US model? Thinking iTunes accounts or keyboards etc etc. Planning to buy a 13inch rMBP. Configuration I want costs £1839 in the UK apple store I am planning to go to the US in a few months and the same machine would cost about $2199 in the US apple store when you do the conversion I would save £500 if I buy in the US which is crazy... thanks.