Schwalbe Marathon Winter for paved roads that get plowed (cleaned) regularly, Nokians for deeper snow, off road etc.
I'm verry happy with Schwalbes for city-suburb 11 km one way commuting. Good on packed snow, good in shallow snow, good on clean pavement, average in deeper snow, useless in snow over 20 cm.
Same. I use 26x1.75" Schwalbe Marathon Winters and they work fantastic on ice, shallow snow, and tarmac with not a lot of rolling resistance. I was caught the other day riding home in pretty deep snow and traction in those conditions were pretty weak. However, after I lowered the air pressure from 70 to 35 psi I had no problems.
You're doing something wrong, then. The extremes are substantially better in snow and slop than the winters are. Suck on bare pavement, of course.
Lol, I don't really care if you think they're "substantially" better, they weren't better in new snow when I rode them. Whether they're better in other conditions like icy ruts I don't know.
Only tire I've ridden that's been "substantially" better than the marathon winters was a Pugsley (Fat Bike). With a 3-4 inch tire, and you can ride in snow, over ruts, and over everything but the sheerest of ice (though now they have studded versions of their tires, so they can even handle that...). Even with those though - it will only handle 6-12 inches of snow (depending on the type of snow, temp, etc).