Hi
As per Geeta's responses above
For the insurance aspect - it's not possible to 'single' out a cheap insurer as such. There are many many factors and variables and premiums range from acceptable to utterly insane!
Some people do have better quotes than others, even from companies which do take into account US driving history and no claims bonus etc.
Depending on 'which' car you choose, insurance premiums will vary, engine size, brand, model etc, then things with yourself, ages, driving experience, where the car's kept, it's value etc. Higher level things will be the postcode in which you live and where the cars registered, if its a single person on the insurance or a married couple, if the main insurer/driver is male or female..
Cheers, DtM! West London & Slough UK!