I have used these tyres on a few vehicles. For present purposes, my focus is on my Djet (a light-weight mid-engined coupe of the 60s) & on the size 165/70-14. I consider them to be very good tyres & am bewildered by some of the reviews. I drive the Djet very briskly indeed on country roads &, given its "tossable" charms, much of its time is spent at an angle to its direction of travel. I judge it to have good levels of grip in the dry & very good levels of grip in the wet (longitudinally under braking & laterally). But these qualities are not its main charms. It is not the crispest responding structure available in most sizes (but possibly is in 165/70) but is notable for two related traits.
One is that it's a very "talkative" tyre which lets you know precisely what it is doing (especially useful in the wet). The second is that when its (high) adhesion levels are exceeded, its limit behaviour is benign - the transient zone is broad & response to remedial inputs is faithful (especially important in the wet).
I'd love to be able to fit Michelin PilotSports 4 or Conti SportContact 6 tyres but, regrettably, 165/70-14 is not an available size. Nor is the PremiumContact 5 available in Australia in 165/ 70-14 (or I'd fit them). In the meantime, I'm very happy with the PC2.
Not that I care, but they are not harsh riding or noisy although they are short-lived.