IMO US standard. Also UK standard as it's the same US layout but with one more key that it might help you in case you want to modify or duplicate one key like "

IMO US standard. Also UK standard as it's the same US layout but with one more key that it might help you in case you want to modify or duplicate one key like "esc". If you don't want to modify any key it might be better getting a US keyboard as its left shift is bigger and easier to press than the english one.