I had a full set of Fuzion ZR1 tires installed on my Boxster. They replaced a set of Continentals. I have put 6000 km on them. Compared to the Continentals, they are much quieter (perhaps because the Conti were bald ?), and give "softer" ride. I noticed a decided difference when cornering, they don't offer as much grip. They are great in wet conditions. I can't tell how well they wear.
I took them up to 200 km/hr, and they handled nicely.
I would recommend them.