Read the reviews on Tire Rack.
I bought these for cold rainy driving. (no snow)
$428 for a set. (about $100 less than PilotSport AS3)

http://forums.pelicanparts.com/uploa...1425016462.jpg

I have those. I've been very happpy with them. The old RE960AS was a little better in the snow (I guess due to more siping), but these are still pretty darn good.
Anyone who says they need a stickier tire for the street is either full of themselves, or flat out irresponsible (IMO).

I got about 17, maybe 18k miles out of the rear Conti DWs (not DWS) before they were dead. The front were fine still. That's 2 years of driving for me.

That's 245/40/17s with 2.5 degrees camber.

The S-drives before that were the same, I expect the Michelin Pilot Super Sports I have now will be similar.

Putting 8k a year on the car, I don't hope for more than 2 years as long as the tires are sticky, and I've been happy with all 3 (but they Michelins are sticky at a whole new level...)

I've been happy with the RE970AS as well. I'm not driving the 911 in the snow but I wanted a tire that would be safe to take out when the temperatures dropped below freezing and the roads were still clear. I don't track the car but I've had no issues on the street with these.

I run Goodyear Eagles. So far no complaints, but it does rain a tad here in OR