One word... NOKIAN!
They have a few choices, but if you want all-season, go with their WR. The WR is severe service rated and I beleive is the only all season to carry it. It's usually only the best winter tires that have this. Basically the WR is a winter tire that can be used year round and not wear like a regular winter tire. I myself just bought a set of Nokian Vatiiva. Not service rated, but has some very nice aggressive siping.
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