The Pilot A/S is a great tire. It's been out for a while, so it's a proven product. There are a lot of people who buy these over the PS2 due to the higher wear ratings. If you have time, go to tirerack and look at the customer reviews for these tires--the number of repeat buyers is really impressive.
I would have bought these if they were available in Europe. As all seasons are not really available out here, I ended up with the Michelin Primacy HP (W-rated) which, after 8K miles, I'm pretty happy with:
http://www.tirerack.com/tires/tires....del=Primacy+HP