I have driven my current Cooper Zeon sport A/S tires for 20,000 miles, and a set of this tire's predecessor (Cooper Lifeliner SLE sport) for nearly 40,000 miles.
The Good: excellent traction in wet, dry, and light snow; very quiet when new; very low price for a Z rated tire.
The "Not So Good": tire is somewhat unforgiving of poor maintenance, these tires will cup if not kept properly inflated and rotated regularly; tires get noticeably noisier with age; expect a treadlife of 40,000 miles versus 50-60,000 miles for some of their higher priced competitors.
2/3's the life for half the price is still a great deal!