Incredible tyres, genuinely the best I've ever had in all aspects from dry grip, wet grip, driving feel, wear rate, road noise... Currently using them on my M4 and they're many times better than the Pilot Super Sport's they replaced!
I've owned various performance vehicles and I've always used premium tyres, from Continental, Pirelli, Bridgestone... and these Michelin PS4S' beats them all. They aren't cheap, but you certainly get what you pay for. They're worth every penny; the tyre is what sticks you to the road, after all - genuinely the most important element of a vehicle. If you can afford them, do not hesitate.