I have had them on my Mazda3 since about March. I use them as a summer tire, but wanted something with a bit of winter tire functionality for our weird weather in Michigan just in case I get caught in some off-season snow.
I like them a lot. They have good grip in dry (for a 400 rated tire), good hydroplane resistance, and seem to do pretty well as far as wet grip. There are probably better tires for wet grip out there, but these are much better than the Hankooks I had last summer. As long as you're not looking for an absolute performance tire, but a well rounded all-season with emphasis on summer performance and just enough winter grip to get you by in light snow, I think you'll be happy.
Having said that, I think I'm going to try the less expensive, brand new, Falken ZE-912. I go through tires so fast that if I'm not happy with them I can switch back to the Pirellis.