I had the opportunity to put PR3's on another bike (SV1000) at only $20 more than a pair of PR2's. Not many miles so far, but they seem fine. The PO had a Shinko Verge 11 on the front that was still in good shape, and a Pilot Power in the rear that was worn. Handling seems about the same. I took the bike out in the rain and the traction was fine for a new tire in the wet. I was able to both lift the front and spin the rear, so traction was decent but not perfect. IIRC, the rear spooled up at about 8000 rpm in first in the center of the lane, so there oil drippings may have had an effect. Braking was good. I didn't push the front to the limit, but traction was good. I was able to lock the rear, but it took some effort. So far, so good.
Since it rains here very little, and I ride very little in the rain, no decision has been made as to whether the C14 will get PR3's or PR2's when her time comes. If the difference stays at $20, and the PR3's wear is close, they will probably get the nod.