I have limited experience, because I really like the first A/S I tried for winter driving with the Stinger. Nitto Motivo UHP A/S "Y" speed rating. I really, really like the "Y". It seems like overkill for an A/S. I don't know of another A/S that has that high a speed rating. They also have a 60,000 miles treadlife warranty. Who beats that? They grip really well in the dry and wet. Of course, during winter, you never test that out. I drive gingerly, so much so, that have even driven on PS4S in freezing temperatures in the teens and not lost grip. I don't push grip in freezing conditions even if the road is dry. I drive the Nitto Motivo tires the same way. I like them so well, in fact, that when my front PS4S are shot - probably by the end of the year - I will replace them with the Nitto Motivo, and, if it's not too stupid, replace the rear PS4S later with the same. Or, if it is too stupid to run A/S on the front and PS4S on the back, I'll just accept the loss of half the tread on the PS4S and get Nitto Motivo all around.
to clarify, I do not plan on running on PS4S through the winter! I mean, that come next spring, I'd replace my PS4S with the Motivo in front and finish off the rear PS4S next summer and replace them with the Motivo then, and going forward stick with the Motivo year-round. They're less expensive than Michelin too.
more editing, to explain that I already have a full set of Motivos on the OEM GT wheels, with one winter on them, so, almost brand new. The Bridgestone Potenza on the Premium are six years old this fall, or at least one pair is that old, the previous driver may have replaced one pair of tires because the tread wear is less in the rear than in front. I may just put the GT wheels back on the Premium - I ran them the first winter we had the car, last year, and really like the look. And if I do that, being cautious not to run tires that are too old, even though they still have tread, I'll have to ditch the half-worn PS4S rears on my GT1 and get new Motivos all around. That's probably what I'll end up doing. Then I'll have virtually brand New Motivos on both cars going into next winter and all the seasons after that.