Hi...was wondering if anyone has any experience with the Nokian Nordman 4 (studded). Nearest shop has those but I can mailorder the Hakka 7s which seem to be the gold-standard of winter tires. Was wondering how the Nordman 4 stacked up against them as I can't find very much in the way of review or test information (in English at least as I don't feel like translating from Russian). The difference in cost isn't substantial but enough to at least consider the Nordman 4s as an alternative. This is for a 2003 Saab 9-5. Thanks