Comparing this tyre to Michelin PS4S and Goodyear SuperSport.
CS7 is superior to both in wet grip, which is just phenomenal! Miles better than GY SS and also better than PS4S.
They don't need heat in them to grip, which is also a big advantage. Good dry grip, predictable, good comfort, etc.
I drive very fast and up until a month ago, I thought that this is the best tyre you could buy. I still think this is the case for most people, just not for me.
When you drive really fast on the road (and I mean fast in the way that lands you in jail in most countries), they disintegrate. Mine started peeling after 20km of pushing on a closed road.
I then took them to a trackday, put them on the back of the car, because it was raining, and they were great, while it was wet. As soon as it dried out, the outer edge of the tyre was gone in one lap, just delaminated. Mind you, this was on the back on a FWD car, I had GY SS on the front and they were as new.
So if you drive fast most of the time, buy GY SS. If you need a tyre that is phenomenal in wet and dry and you don't push the car to the limits, just get the CS7, it really is that good.