While Pirellis may not be the most expensive tire for performance vehicles I have been supremely satisfied with these tires. I have a set of PZeros on my brand new Camaro SS which have been magnificent and have kept the OEM PZero Neros on my wife's 2007 Mustang GT (second set) due to their outstanding performance.
For my part the PZeros on my car have given me unsurpassed grip when navigating the north Georgia mountain roads around my area (single lane and wonderfully curvy). And while I haven't had an opportunity to try them out in snow yet, I'm confident they'll perform admirably. Cornering, straight line acceleration, wet traction & hydroplane resistance have been thoroughly tested and I can say with confidence they are well above other tires in this category.
Can't remark on tread wear at this point but with proper inflation I don't see significant wear at 4000+ miles so I'm holding out hope on that front as well. Will report back at 10000 miles for additional results.