I've worn out two or three sets of the predecessor of this tire (Turanza Serenity) and after having gone through numerous other tire brands Michelins, Yokohamas, Goodyears, have to say that this tire is the best of those by a significant margin. These tires offer very good cornering grip... amazing actually. Great wet and dry traction and decent traction in snow and ice. Where they really shine is ride quality, comfort and noise level.
Bear in mind that I rate this tire as what it is... a Grand Touring Tire. It won't compete against special purpose tires but neither will they match this tire for this intended use. Unless you can use the last 10% to 15% of the performance that high performance tires offer you will be FAR, FAR happier with a tire such as this. The difference in comfort and combined performance will serve most drivers better the majority of the time. (As a footnote... I own and drive two Trans Ams, two Corvettes, a Grand Prix GXP, and other assorted cars). I have run high / ultra-high performance tires on those cars and unless I'm pushing the edge of the envelope, these tires perform more than adequately.... and they are FAR more comfortable over potholes, expansion joints and they don't drone you to death with tread noise.
One BIG side benefit not usually thought about is that these tires give me 45K miles +/- of wear and I replace them before they get down to the wear bars. So... while I'm wearing out HP and Ultra-HP tires at 20-25K miles I'm only at the halfway point of having to replace these. So... they save a lot of money up front and again over the far greater lifetime.
I love these tires and will be ordering my next set in the next week.
Good luck in your choices... but if I might make one suggestion it would be this. Look very carefully at what you NEED in a tire for the majority of your driving... and don't overestimate your need for that final 10% of performance. Most people never even get close to using that final 10%.