I put on Potenza RE970s a few months ago and could not be happier. They are much more quiet than the OEM Pilot Sports and handle a lot better, too. Of course, the Pilot Sports had DRY-ROTTED in 4 years and 17,000 miles while primarily sitting in my garage!
Stupid Pilot Sports looked beautiful on the outside and still had nearly half their tread, but were slicker than heck in handling. I only replaced them because I wanted to drive year-round instead of having to park the car half the year due to cold temps -- THEN I discovered the vertical cracks in all 4 of them. The mechanic told me I was lucky I didn't have an accident.
Perhaps new Pilot Sports would handle a smidgen better than the RE970s but I only drive on the street and it makes no difference whatsoever. They feel pretty fast to me. And I can drive the RE970s year-round so maybe they won't get DRY-ROT in 4 years like the *&#& Pilot Sports.