Build quality is first class as you would expect from ping.
Love the look of these irons as the head is small like a blade but with cavity back for forgiveness. These are easy to use and keep the ball on a lower flight, which is good for me as I hit most shots with a high flight.
I have no dislikes
If you hit the ball well and want to get away from clumpy great improvement irons then get yourself a set of i10 irons you will not regret it.