I ran Michelin Pilot Alpin PA3's on my G35 last winter and I plan to do the same on my M Roadster (yes, I'm crazy) this winter.
I'm sure they are not as good in the snow as, say, a Blizzak LM60, but they are awesome tires in the wet/dry/freezing temps. I could greatly exceed the speed limit with good noise levels and zero vibration or stability concerns. Grip on the dry was good despite downsizing to 225 in the rear.
Ben, do you have any idea how the PA3 compares with the LM25 and the Dunlop M3?