A friend in the US, who worked for a large institution doing web development, bought a Dell (desktop) so she could work on he work projects at home. She used to be a sysop so, when the Dell started misbehaving she thought she could fix it; she couldn't, and neither could the sysops at her work. Her description of the helpdesk at Dell was that they were a waste of space, as she got nowhere with her requests. Until the purchasing manager at her work reminded Dell that their institution bought a lot of Dell machinesand nobody was happy with this treatment Dell was giving their employee on her personal machine. It was replaced within a couple of days at no cost.
The software that will come with a machine from the US will have everything defaulted to 'the American Way'. Even in Australia the software wants to correct the Systeme Internationale Unit for length, officially spelled "metre", to the spelling for a dial that measures things ("meter"). [Micro$oft's dictionary descibes "metre" as "the English way of spelling meter."] If this bothers you, you're in for some bother. Changing the default dictionary in Office from English US to English Aus is no improvement; apparently the Americans from Seattle think Australians do everything the American way. Sigh! If you're in the UK, at least you can use Micro$oft's version of English UK, which seems to work well in Australia.