We do have alot of snow and ice here in Norway and the best studless winteryres are from my experience from driving on both frozen lakes and roads is as follows:
Yokohama IG30
Nokian hakka 7
Michelin X-Ice (might have a new name this year)
Also remember that wintertyres that have speedrating of H and V has no function on snow and ice what so ever.. R is ok but Q is def the best