I ran the RE960AS Pole Position for my entry into the dark side. I ran it for about the same as you, around 16,000 miles. Mine was not worn out, had around 4 thousanths left, but I was heading out on a couple thousand mile trip and much rain was expected and around here the wind always comes with rain, so I put on a new Yokohama. My gosh how much better the Yokohama is for me at least.
When I first got the Pole Position being my first car tire, I didn't have anything to guage against. Now I have about 4,000 miles on the Yokohama.
My thoughts are the Pole Position is way more sensitive to road crowns ect, takes way more effort to maintain a turn and more lean angle is needed to corner the same speed as the Yokohama. I don't care to ride like a racer, so more lean to me felt like for the same speed it was less secure feeling in turns. Just by looking at the tires side by side I can see the Pole Position is flatter profile vs the Yokohama that has rounded off sides making turns better and less problems following road irregularities.
The biggest difference though is riding in crosswinds. Since the Pole position takes so much lean to turn, it also takes much lean to counteract cross winds. Not a nice feeling to have wind at your side and leaning over to the extent pegs are nearly dragging to hold a straight line. Yokohama miles ahead riding in wind.
sorry, don't mean to hijack your review, just thought I would throw in a couple of my own thought. I won't be riding on one again, that wind problem just makes the tire too unforgiving to the point of dangerous when it really gets blowing.