I will be in a car touring southern finland for about a week making 5-10 mobile calls a day, then maybe 1-2 calls a day in helsinki for another week, then in netherlands for a week with far fewer calls. I have an unlocked quad band travel phone. am I better off with 2 sim cards- a netherlands sim card and a finland sim card, or 1 eu or other regional european card? my reading suggests the number of calls in finland makes the finland sim card a better value, and a second, lower use card for netherlands. Any suggestions on a better company to purchase the calls through? I would rather spend my money on some good finnish food than calls!