I have studded Coopers on the work truck, studded Hankook s on the T4r, and blizzacks on the wife's audi.
So far, I've only had a scary moment on the Hankook s. 5mph coming down the Storm Mountain access road turning one of the tightest switchbacks. Tires broke loose, I did a 360 and came to rest gently against the guard rail. Hooray for a wider stance. ...only the sidewall touched the rail.
4wd may be enough for you city folk, but I'll laugh and pull you out of the ditch if you try that shit on my mountain. I still have to chain up when the snow isn't packed down yet, and when I'm pulling some fool out of the ditch Again. Mild winter this year, and I've already rescued 10. One rolled into the river. Broken ribs, broken head.
Based on one winter, my ranking first to last is: blizzaks, studded Cooper s, studded Hankook s.