I know the K15 and G15 are both the game improvement irons from Ping, but I want to know which irons are more GI, I have searched many datas of these irons and try to find the better one.discount golf for sale General speaking, K15 irons and G15 irons are similar on the apprarance, but they have different features, and if we say the G15 are good game improvement irons, then K15 can be super game improvement irons. So my conclusion is obvious the K15 are more GI. There once some golfers teseted the Ping K15 irons, and they said the K15 are extremely forgiving, high-trajectoty irons which can reduce your tendency to slice. the K15 irons combine a large,lightweight titanium face with a 17-4 stainless-steel body to increse forgivenss and improve conditions, golfers also can get the optium performance through customizing sticks of the K15 irons.TaylorMade R9 Super Tri Driver In addtion, the K15 irons own extremely high moment of inertia and a patent-pending feature which can create lower-spining, higher launching shots, then they can make the ball fly longer and straighter. So if you also want to improve your golf, you can have a try the K15 irons.